I am new at your channel.plz tell us that difference which is used for voltage regulator MOSFET and a MOSFET use for only one touch then MOSFET sill ON supply
There's a huge problem in your timer example. Whenever the diac triggers the triac, current starts flowing from capacitor to the load (not from the ac source) as at that time the ac source is at zero point. Pin my comment.
That is NOTHING like two diodes in parallel. I wish you provided a correct explanation, because I still do not know what it is, I guess I'll have to hit the books. :(
If you don't understand something it is not because there is some mistake! A diode won't conduct until a certain voltage is achieved, usually small like 0.3 - 0.7V. In a diac this is a higher voltage as stated 25-40V, so in one current direction it will suddenly conduct. The same ting happens in the opposite current direction i.e. in the other half of the cycle, so it behaves like two diodes with a high breakdown voltage in reverse parallel. The purpose is to provide a sudden pulse of current to some other device e.g. a triac, every half-cycle.
@@karhukivi "The purpose is to provide a sudden pulse of current...". Ok, so in the example (a dimmer for a lamp I guess), this circuit is limiting the A/C current to the lamp to only the times when the voltage is between 25 and 40V (of the sine wave)? Is this somewhat similar to a DC regulator? To the end user (the owner of the lamp), it appears that a constant dimmed brightness (let's say 1/4th of the brightness due to the 30V capacitor) is achieved and since this is an A/C bulb, we have to use a strategy (like the one provided) to allow current in both directions while providing a smaller amount of current to the bulb... does that sound right or did I get it wrong?
