DIY Deluxe Dim Bulb Current Limiter

Подписаться 581

Просмотров 20 тыс.

50% 1

Electricity is dangerous, If you are not comfortable working with it, don't.
What is a dim bulb current limiter, how to use a dim bulb current limiter and how I think my DIY Dim bulb current limiter is better then others.
For more information like 3d Print Files, Schematics, etc. Please visit my site www.jmanatee.com/
Parts used in this video:
PINFOX Project Box amzn.to/3GPVBL5
Omron LY2-UA-006244 Relay amzn.to/3TyJk5e
Bulb Holder amzn.to/3Tw53un
Lighted Round Rocker Switch amzn.to/3NBymIk
Momentary Switch amzn.to/3RAWLPc
Panel Mounted Fuse Holder amzn.to/3GSB4W5
My studio gear:
Sony FDR-AX700 amzn.to/3L5H0ys
Sony - HDRCX405 amzn.to/3SSNyCn
DJI Osmo Action 3 amzn.to/3IWkkOf
SanDisk 128GB Extreme PRO amzn.to/3ZJiGGy
SanDisk 128GB Extreme amzn.to/3mwC2Au
GVM 48" Motorized Camera Slider amzn.to/3mB9Ts8
GEEKOTO Video Tripod amzn.to/3F1Y58x
Wisamic Softbox Lighting Kit amzn.to/3SV9oFe
Saramonic Shotgun Microphone amzn.to/3L2Hkh6
EVISTR Digital Recorder 8GB L53 amzn.to/3kQCIQJ
ComXim Rotating Turntable amzn.to/41UFd5h
Electronic Repair Equipment I Use:
HAYEAR 16MP HDMI Microscope amzn.to/3yeUvEl
AmScope SE400-Y amzn.to/3myGMFJ
Hakko-CHP-170 amzn.to/3ZJuGb5
Hakko CHP 3-SA amzn.to/3KXY7SG
AMIR Electric Screwdriver amzn.to/3JhXB0C
Anti Static Silicone Tool Mat amzn.to/3ITVZbX
Flexible Arms Tool amzn.to/41SsDTV
KORAD KD3005D amzn.to/3yjw609
Automotive Repair Equipment I Use:
LAUNCH X431 V PRO amzn.to/3mrT9Dn
Autel MaxiTPMS TS508 amzn.to/3IYYbyY
Teslong Dual Lens Endoscope amzn.to/3L3HxRq
FOXWELL BT705 Battery Tester amzn.to/3ZvtlF6
GOOLOO GP2000 Jump Starter amzn.to/3ZLeMNl
NOCO GENIUS5, 5A Battery Charger amzn.to/3mzsW5M
KIMO 3/8" Extended Electric Ratchet amzn.to/41UH7Tt
GEARWRENCH "1/2" Electronic Torque amzn.to/3ZNNTsk
Astro Pnematic 1/2" Low Profile SAE amzn.to/3F67R9M
Astro Pnematic 1/2" Low Profile MET amzn.to/3KZrRyw
OTC 4579 9-Way Slide Hammer amzn.to/3JgL1i1
Lisle 25750 Brake Compressor amzn.to/3KYRHTj
Lisle 24300 Brake Compressor amzn.to/3ZjK0LL
Tool Aid Back Probe Kit amzn.to/3SSUIqf
Power Probe III amzn.to/3kPb9r4
Machining Tools I use:
Tanice SPB26-3 26mm Parting Grooving amzn.to/3F5xjvX
BXA 250-201 TOOL HOLDER amzn.to/3SXcUPt
Disclaimer: I am not a pro. Don't take my advice. Anything you see in my videos are for information purposes only.

Опубликовано:

3 окт 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 130

@scottthomas3792 Год назад

Two jobs ago, I had a very simple version...a basic extension cord from K-Mart, cleat socket from the shop junk pile, and a clear 100 watt bulb, all on a piece of scrap wood. This place was old and still had fuses, so a dim bulb tester was pretty much a necessity.

@jmanatee Год назад

Its a good tool to have!

@Ezzell_ 11 месяцев назад

This is the best dim bulb setup have seen! You have a new subscriber!

@jmanatee 11 месяцев назад

Thanks

@carlosjorgefernandes1050 2 месяца назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-B86Gd-hdU7c.html

@williamwoo1437 Год назад

Very nice and thoughtful design 👍 Only concern is the banana jack power leads that can be dangerous for those being careless. But then again, one could argue that careless practitioners shouldn't even be near such works

@jmanatee Год назад

Doing any work on AC is dangerous. The point of this is to limit the current that can power the device or hurt operator. And it is fused to help protect you more.

@lord_haven1114 7 месяцев назад

That’s so awesome! I love it. Thank you for providing it all for free

@jmanatee 7 месяцев назад

You are so welcome!

@trebushett2079 Год назад

You're totally Cavalier when handling live test leads, especially using both hands - a wonderful potential perfect loop through your heart!

@jmanatee Год назад

Possibly, but this is a current limiting device, With 40 watts 120v circuit the current is limited to about 0.33 amps generally it take 1 - 4 amps to kill someone. That is the reason to make one of these, It makes it much safer to work on AC devices. I am more cautious with SMPS and charged DC capacitors.

@bijufrancis4284 Год назад

was thinking about this. Shocked to see

@hernancoronel Год назад

@@jmanateeHi FWIW I did a quick search and 50 to 150 milliamps might be enough to stop a heart…

@jmanatee Год назад

@@hernancoronel It isn't as simple as current. A D-cell battery can produce 5amps, You can hold a 12v car battery (capable of 700+ amps) terminals and not even feel a shock, You can feel 110v AC at 300 milliamps DC vs AC frequency play a big role. Anytime you are working with electricity there is a danger. I believe I am safer working with the dim bulb then without

@hernancoronel Год назад

@@jmanatee of course there are a myriad of possible scenarios, I was referring to the one in your video: 110V AC 60hz, potentially hand to hand current and your heart in the way of that current flow. Do as you wish I am fine, it is your safety not mine. Keep up the great content!

@sanelleric6121 Год назад

Made similar one a few years a go, working a lot on power electronics, such as power supplies and motor drives (mostly DC inverter air conditioner boards). Life savior. I've put and AC contactor and connected all 3 contacts as one, which bypasses bulbs when I push button for direct connection, after making sure there's no short. Also, 3 bulbs, each with it's switch, so I can make few combinations (7) of limiting input current.

@jmanatee Год назад

Very cool. I think anyone who regularly works on power electronics should make some kind of current limiting device. This has saved my butt a couple times.

@sanelleric6121 Год назад

@@jmanatee Mine too. Ever since electrolytic capacitors blew in front of my face (long time a go, when I was a newbie), I was scare to death working with SMPS. I accidentally set switch for 110V input, and plugged it to 230V, back in the days on AT SMPS.

@nekoizmase9969 Год назад

@@sanelleric6121 do you have scematic / jel imas shemu da okacis link?

@nekoizmase9969 Год назад

@@jmanatee your webpage is offline?

@sanelleric6121 Год назад

@@nekoizmase9969 Nemam kulturno nacrtanu, samo u svojoj teki za praktični rad.

@PosthumanKindergarten 6 месяцев назад

this reminds me of a contraption i made, the "ballast board", in other words i screwed a bunch of different size fluo ballasts on a fiberboard and select em with hairdrier switches, you can configure up to like 200W and limit the current on a load, it has only two wires coming out, it seems silly but it's fairly useful, instead of finding the correct ballast or for adjusting the power finely

@jmanatee 6 месяцев назад

Sounds interesting.

@acestudioscouk-Ace-G0ACE 11 месяцев назад

Nicely done, thanks for sharing.

@jmanatee 11 месяцев назад

Thanks for watching

@GlenBeer Год назад

Great idea & video! The way you handled the live leads scared me .

@jmanatee Год назад

Thank you, Because its current limited when I have accidentally touched the leads it doesn't hurt... very slight tingle.

@HIDLad001 Год назад

This is definitely better than the ones that just use a socket adapter and a regular outlet,

@jmanatee Год назад

Thanks I agree

@carlosjorgefernandes1050 2 месяца назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-B86Gd-hdU7c.html

@el_sturlo Год назад

Brilliant design, thank you

@jmanatee Год назад

Thank you

@cookcrazy 7 месяцев назад

Well - Thanks for the Schematic - Finished building this design today - Looks almost identical as I used the same project box. I decided I really didn't want the Banana jacks so I left those out, and rather than the duplex receptacle I used a range type snap in receptacle (Qualtek# 738W-X2/03). I don't have a 3D printer so to mount the 3 light bulbs I simply used 3 Leviton# 8101 Porcelain 2 part Lampholders - they fit perfectly across the top.

@jmanatee 7 месяцев назад

Very cool! I Like the changes you made. I should have gone with the snap in receptacle....

@mixinginthebox 17 дней назад

Nice ty!

@leonardpeters3266 9 месяцев назад

I really like this design. Best part is that it comes up in limited mode. I would appreciate the relay part number and the current limiting resistor sizes for the LEDs. If you could provide those I would appreciate it.

@jmanatee 9 месяцев назад

The relay is Omron LY2-UA-006244 Relay... I can't remember the exact resistor but I think it was either a 5.6k or 10k 5watt in series with a diode. Although the LED is a diode it can have trouble with the reverse current thats why I added the diode.

@vernonbosshard9317 Год назад

I like this design, plus you showed the diagram, in other videos I have to stop the video at a certain point to get a small glimpse of it, frustrating. The sound on the video is good, no echo or low volume. I would add an output voltage and amp gauge. I might add a GFCI outlet, just in case of a dead short to ground. I've used one before and it saved my fuse and my ass.

@jmanatee Год назад

Thanks, I have the schematic and 3d print files on my web site. I like the ideas for GFCI and gauges Version 2?

@t1d100 Год назад

Nice project.

@jmanatee Год назад

Thanks

@armmargret1970 19 дней назад

Clever tester design, I like the auto switching and the combination of different power levels. Not sure what your mains voltage is, but the way you handle the alligator clips is frightening. Is there a difference in getting electrocuted with and without power limiting?

@jmanatee 19 дней назад

No difference

@MichaelB-wm5cg Год назад

Great explanation. Here in the UK we can't buy incandescent filament bulbs anymore. I wonder what could be an equivalent as simple current limiter?

@jmanatee Год назад

They are getting harder to find here in the USA too.... Can you order them online?

@PBoard 7 месяцев назад

Yes we can, you just have to look

@faceboxtv4789 5 месяцев назад

What is the formula to calculate the bulb wattage needed related to the device?

@jmanatee 5 месяцев назад

Watt = (E / R) * E Where E =Voltage and R = Resistance

@karljay7473 Месяц назад

Would there be an advantage to having the 40 automatically trigger on the 60 and the 60 automatically trigger the 100 with a current sensors or some other switch so that it self adjusts to the current that is being pulled thru it? I'm new to these and it seems you have to know in advance that the device would pull a certain current amount in order to select the right combo for the most protection... However, if you make it so that the weakest of the bulbs had a trigger of some sort, if it were consuming too much current, it would instantly trigger another bulb. Maybe a trigger that measures current and only acts IF the bulb is on. That would make it fully automatic so you don't have to know which combo is best. Also, what gain do you get by using the 40 sometimes vs the 100, is it better protection? Then maybe having an auto trigger setup, you could have 10 20w bulbs in a row, each on triggering the next ONLY if needed.

@jmanatee Месяц назад

The reason to limit the power is to protect the device you are working on and give you an indication that the device is using 40 or 60, etc watts

@karljay7473 Месяц назад

@@jmanatee So what is the advantage of using one wattage over another wattage? Would using 100W all the time be better than sometimes using 40W and what happens if it draws a lot more than the 40W bulb will consume, doesn't the device still run the risk of damage? That was my whole point. If you don't know what the current will be in a short, you select too low of a wattage bulb, then you still have damage. If you select too high of a wattage, you don't get much light.

@chiraldude Год назад

Do not rely on a current limiter for safety! 10ma is enough to cause uncontrolled mussel contraction "can't let go". 100ma and above across the heart will interfere with heart function which means high probability of death!

@jmanatee Год назад

You do understand that this device is to assist in working on AC devices. Doing this by its very nature is dangerous. If you do not feel comfortable working with electrical devices. Don't.

@garygranato9164 10 месяцев назад

i doubt that 10mA will cause you to lose muscle control

@martyaussie4538 5 месяцев назад

Is there a reason to actually need 3 bulbs? I have a dim-bulb tester with only 1x 100W lamp, and it indicates any piece of equipment with a short circuit (or very low resistance) in its circuitry. So, i'm trying to reason WHY i would ever need lesser resistance filaments in the 40W & 60W bulbs for equipment testing? Obviously the resistance of the 100W bulb allows enough current for fussy switchmode power supplies to startup which also gives me reason to NOT need the 40W & 60W bulbs. Maybe there's a scenario i haven't experienced yet?, but my dim bulb tested has been fine for all the valve radios, guitar amps, vintage hi-fi and computer power supplies over the decades of restoring & repairs that i've experienced. with thanks.

@jmanatee 5 месяцев назад

No this is a luxury, I used a single bulb current limiter for a long time. I just wanted to improve it. I always start with 40watt bulb to get an idea of how the repair is going.

@electrolatif Год назад

You get new subsrib 😊 great job If you use bulb G5.3 your bulb tester will be smaller, just order today my G5.3 bulb 50w hope will be work fine I will try do like your tester but smaller😅

@jmanatee Год назад

Thats cool but I think g5.3 bulbs are halogen and the actual wattage is less then there stated wattage just so you know when using them

@electrolatif Год назад

@@jmanatee i will update to you after i try them🙂 also i will check also actual wattage

@breakthru3000 9 месяцев назад

nice tool but handling AC mains like that is dangerous. always unplug the power cord when touching live wires (dont trust the on/off switch).

@jmanatee 9 месяцев назад

I have heard that before...

@PBoard 7 месяцев назад

I like this very much and want to build one. However, I'm slightly confused. When I look at the diagram vs your list of components. The SPSTs in your list are 2 pin, yet what I assume are the 2 switches on the diagram, those just above the relay, are 3 pin. Could you clarify this, please?

@jmanatee 7 месяцев назад

the relay is a double pole double throw, the two switches are labeled NO and NC

@PBoard 7 месяцев назад

@@jmanatee Thanks for your reply, I see that now 🙂The other contacts on the diagram are those of the relay? I have an Omron LY2NJ 10A DPDT, which I intend to use for this project.

@Tysman909 9 месяцев назад

I want one, right now just use a variac and isolation transformer for vintage electronics

@jmanatee 9 месяцев назад

They are very helpful

@amsoiltek 29 дней назад

@@jmanatee How does the relay get along with the variac? I'm sure it won't stay latched.

@jmanatee 26 дней назад

@@amsoiltek It will stay latched at 70v and fall off at 60v

@mikeadler434 9 месяцев назад

👍👍

@jmanatee 9 месяцев назад

Thanks

@johnfitzpatrick2469 11 месяцев назад

G,day from Sydney Australia. Wow fantastic invention. Would another way for the same purpose; Bench power supply LCD of V and Amp with a meter between cables to appliance measuring Amps? You could limit or set V and detect if a short exists because no amps are passing through the short? 🌏💫

@jmanatee 11 месяцев назад

Bench supply works great for DC applications. With AC you could use a variac and amp clamp but a dim bulb is a quicker more protective way

@andydelle4509 Год назад

I noted you are using a switch mode power supply to demonstrate your dim bulb project. But I think the audience here needs to know that switch mode power supplies and dim bulb testers are often a bad mix. As a switch mode power supply is non-linear, it doesn't work well with a linear current limiter. It may not start up but rather pulse on and off. As there is a line operated rectifier and large capacitor on the front end, even reduced current can still easily take out the switch transistor or MOSFET due to capacitor storage. This warning also goes for UPS units and motor VFD drives. The primary use of dim bulb testers is older pre 1990s electronics that used linear power supplies. And most calss B audio amplifiers which still mostly use a linear power supply.

@jmanatee Год назад

Although I was just using that SMPS for demoing the dim bulb I built. Current limiting an unloaded SMPS during repair is not uncommon. A lot of SWPS use some form of current limiting to ease the inrush current during power up. Something like a series NTC (negative temperature coefficient) thermistor.

@ultimateworkshop2000 Год назад

Hi there nice job, I like the way it defaults to current limit every time, but I didn’t understand it from the diagram how will it stay latched how comes its AC not DC, I really don’t get it 😊? Are those 120V LEDs ready made or you added a resistor to normal ones?

@jmanatee Год назад

They are regular LEDs I added a resistor to. The coil of the DPDT relay is 120v when you energize it one set of the relays switches powers the coil through a normally closed switch so as soon as the relay is energized it self powering the coil. Its "Latched" until power is lost or you press the normally closed switch (opening it) breaking the feed to the coil

@ultimateworkshop2000 Год назад

Ok I got it interlocking relay I will search for one here in my country, hope the price is good, thank

@cookcrazy 7 месяцев назад

Very nice - Any chance that we can see inside? Would love to see how you have the relay hooked up - I am not quite picturing it from the schematic. The Momentary Push Button Switches and the Contactor got me a little bit guessing. Thanks for sharing...

@jmanatee 7 месяцев назад

Well I am a bit embarrassed by the wiring on the inside but when I get home (on vacation) I can post a few pics on my website of inside

@cookcrazy 7 месяцев назад

@@jmanatee No need to be embarrassed - Sure it cannot be worse than my rats nest wiring jobs LOL - Looking forward to seeing that contactor and latching - may get some ideas on how you got the LED& and resistors put together etc to make it a little neat.... I seen some nice pre-made units on Fleabay today all done up with the mounting bezel, LED, resistor, and wire pigtails, all shrink wrapped nice and neat.... always nice to see other's way to approach projects like this... always good ideas to be found...

@carlosjorgefernandes1050 2 месяца назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-B86Gd-hdU7c.html

@Crimsomnia 6 месяцев назад

Are halogen bulbs good for this purpose?

@jmanatee 6 месяцев назад

You can use halogen bulbs but there wattage will be equivalent so a 100w halogen may only be 70watt

@karllaun2427 8 месяцев назад

I like this design. Will the relay still function if you feed the AC through your variac at a lower voltage?

@jmanatee 8 месяцев назад

relays will usually clamp at a lower then rated power, But once activated they will usually stay energized at a much lower voltage. If you are using this with a variac and bringing the voltage up slow you would probably want limit mode anyway

@RGD-Audio-Repairs Год назад

Ahh, so you have 3 bulbs. All of different wattage, for more or less current to the device? So a 40w gives the device connected, less power? And 100w gives most power? So when testing an amplifier for a short… the 40w bulb would severely limit the power that the amplifier receives, compared to the 100w bulb?

@jmanatee Год назад

Correct but you can also do combination 40, 60, 100, 140, 160, 200 watt by using single and multiple bulbs at the same time, I also have a couple 150w bulbs if need be for up to 400w 2x150 1x100

@PBoard 6 месяцев назад

I've got most of the parts to build this now, but what LED's did you use, please?

@jmanatee 6 месяцев назад

Just regular LEDs with resistor inline

@PBoard 6 месяцев назад

@@jmanatee Thanks, having read through the feed I found the answer, and found a few design alternatives since.. Can it be substituted with a 230v LED?

@martyaussie4538 5 месяцев назад

@@jmanatee the resistors that were left off your diagram ;-) - Hopefully nobody has built from the diagram verbatim and then blown LEDs into the sky without the necessary dropping resistors. ;-)

@larrymcnair6249 11 месяцев назад

How are you all getting incandescent bulbs now? All I can get locally is led.

@jmanatee 11 месяцев назад

I got Rough Service Shop Light Bulbs on Amazon... I think you can still find regular bulbs on Amazon too

@jjoeygold Год назад

If my motor/power supply is 500W what would be the suggested globe wattage?

@jmanatee Год назад

It isnt what your supply is it is what the load needs so If the motor requires 500w then you would need 500w of bulbs

@jameswarren1831 Год назад

Is it possible to use the small HV halogen bulbs to save space and make it more durable?

@jmanatee Год назад

You can use halogen bulbs but there state wattage usually is the Equivalent watt rating not the actual rating (ie a "75w" halogen is actually around 55w) Also halogen bulbs run much hotter and usually they are more expensive

@jameswarren1831 Год назад

@@jmanatee I totally forgot about the output verses actual consumed power. Thank you for the response!

@paulperano9236 Год назад

Do you use an isolation transformer too ?

@jmanatee Год назад

Yes, absolutely, especially when using my oscilloscope, its a tripp-lite isolator IS-1000

@garygranato9164 10 месяцев назад

why not a bulbs with clear glass so you can see the filament ?

@jmanatee 10 месяцев назад

That's a good idea but due to new laws, incandescent bulbs are getting hard to find in the USA

@a2phil Год назад

I'm a newbie, forgive the possible stupid question, can this be used in place of a variac, or (even better??) with a variac? KE8NFK

@jmanatee Год назад

it wont replace a variac but can be used with a variac

@fed9096 10 месяцев назад

you should sell yours, I would buy one! 😅

@jmanatee 10 месяцев назад

Thanks,...

@barryandersen1 10 месяцев назад

Please change the name of your channel. When searching "jmanatee" all that comes up are manatee videos.

@jmanatee 9 месяцев назад

I know its a problem but I have had this for decades.

@craigs5212 Год назад

You do realize a 40W, 60W or 100W LED bulbs don't draw 40, 60 or 100W. That is just fake number that represents the equivalent light output of normal old time filament light bulb. In rough terms the actual wattage of those LED bulbs is only about 10% of those numbers. Most LED bulbs have switching power supplies built into the base and are not just plain resistive loads and useless as a current limiting device.

@jmanatee Год назад

I do know that, Thats why I used incandescent light bulbs The kind with plain old resistive filaments. The LEDs the previous comment was talking about were the indicators for Full or Limited power

@jjoeygold Год назад

@@jmanatee Can Halogen Globes be used (assuming they have the same real wattage as incandescents)?

@jmanatee Год назад

@@jjoeygold Yes as long as you know the real wattage

@misterbonzoid5623 11 месяцев назад

Don't you have Safeblocs in America? Those banana plugs and croc clips are hideously dangerous, uninsulated and right in front of you.

@jmanatee 11 месяцев назад

This is used for testing and repairing electronics Yes it is dangerous but so can testing and repairing electronics.

@stevenbliss989 Год назад

You love to live dangerously! Holding onto the two alligator clips horrified me, and I think BigClive would also freak out!

@jmanatee Год назад

Sorry, Living more like ElectroBOOM

@stevenbliss989 Год назад

@@jmanatee :), ...stay safe man!

@jmanatee Год назад

@@stevenbliss989 Thanks will do

@richardplatko7532 10 месяцев назад

Lol funny. Oh yeah shout out to Big Clive and Electro boom. Thanks again for the contest, jmanatee. And thanks to all the other channels that I love. You guys are the best!