Thank you Shark Dude!! Your power supply video with feet showing made my wife burst out in non-stop laughter. 😷😆🤣 Seriously.. thanks for your easy to understand and comprehend lessons. 👍🏻🇺🇸
Mr. MudDuckSharky , I just wanted to say thank you so much. I ordered one of these power supply and love it. it's better than a mean well. i built a ldmos off your schematic i did a little change to it like i a doorknob capasistor of 650pf in the place of the 2 of 330pf and it runs great . thank you again . aka 6o cheyenne wyoming channel 28
Thank you for the info. looking for around 65V for LDMOS . you can add more caps to help with ripple. Think I want 2 for SSB to help with voltage sag. 73's
The LDMOS pallets have my interest. As long as a pallet comes with all necessary components and instructions I think I could put one together. My main concern is tuning. Do these pallets need to be tuned after assembly? I have no test equipment to tune with nor the knowledge to tune an amplifier.
Now for me a sideband operator might need some more help somewhere what do you think? I run and monitor 385 lsb or 395 usb for the I S channel. Thanks for all your videos Cale.
Hi, first let me say then you are doing a great job. Me and one of my friend are looking to built a ldmos amplifier but we need your help with the cooling system so Is it possible for you to sale us few waterblock for our cooling system. We are amateur radio operator in Quebec and ready to pay for this waterblock. Thanks! André VA2WR
@@marklowe7431 I meant from the view of someone who never strayed from the world of mass-produced, feature-rich 14v equipment. I'm learning that lesson w/ 28v 422's.
my dad wanted to know why you were phased by a transformer, bridge rectifier, and capacitors yet were comfortable with what looked like a complicated (by comparison) transmitter circuit? $250 for an unregulated power supply is eyewatering expensive, yes he understands the high current rating of the transformer makes it more expensive but $250 for an unregulated power supply! what you, missed is that the 60-volt power supply would also transmit mains fluctuations at the ratio of the windings which on 110 volts would be 50%. it may be of course you do not need a regulated voltage but $250 for an unregulated supply. do you know $250 would keep my fashion disability satisfied for at least a week?
1800 peak watts out put? Come on really? Your input power is , 60.2 volts by 18 amps equals 1083 watts So 1083 watts in, produces 1800 peak watts out put? Lol. 18 amps for 1800 watts ? Come on Sharky . Do the maths . Look at the data sheet and efficiency curves. I question your watt metre ! 166% efficiency ? No way!
I am not nearly a tech but i can understand it, 1000 watt DC will convert into 1000 watt RMS sinusoidal which will have a PEAK voltage aprox 1/3 higher then the RMS voltage and so in a 50 ohm load will have a PEAK wattage of over 100%. Right?
A 110 volt electric heater 1000 watt. P=U(dc or rms) x I U(dc or rms) =I x R So I=1000:110=9 amp So R=110:9= 12.2 ohm So peakvoltage of 110 rms= 110x sqrt2= 155 volt @ 12.2 ohm So Ipeak= 155:12.2= 12.7 amp Ppeak= 155x12.7=1969 watt His 1800 watts peak sounds to me just about right. Right?
Thats why "they" say "peak power doesnt mean shit" Look at 6:53 , just before switching to peak you can see 500 watt rms(or is it average?) 1083 DC watts in: 500 RMS watt @100% mod out=50% eff. Doesnt sound teabag for me, it is at least plausable.
robber576 Btw, he is not sticking his rf probe at the output because there would be around 300 volt rf(600 volt peak to peak) and his scope would probably blow up, you need a pretty expensive high voltage rf probe or rf hv attenuator to do that besides a scope is a quality device and not a quantative.
