Bridge regulator

195

02:16:50

It's uses zener diode bridge instead on standard diode. It regulates  from 170v ac(120v ac rms) down to 20v DC. It's low power but simple way to regulate  the voltage.

published 7 years ago

LeButch

7 years ago

Also, it shortens mains power when voltage reaches the breakdown voltage of the zeners... THIS GIRL IS ON FIREEEEEE

LeButch

7 years ago

Well, actually the resistors carry most of the wasted power, but still inefficient over 9000...

Voltransistor

7 years ago

Your right it's draw quite a bit of power throug the resistor and capacitor. It still doesn't drain too much it's only at 32mA. I put two capacitors and two resistors in series to reduce wattage across each resistor and capacitor. you right though It is better to use a separate regulator after a diode bridge for better efficiency.

hurz

7 years ago

Trolls do not go into discussions. They just leave statements and then they hide. Actually the power dissipation at each 100 Ohm resistor is less then 50mW nothing is burning. @Voltransistor dont let you irritate by stupid statements without fundamental arguments. Trolls are to many on EC.

BillyT

7 years ago

Yes the circuit works ok, depending on the required output wattage, a transformer would be cheaper than the capacitors along with a normal full wave bridge/zener regulation circuit.

hurz

7 years ago

i dont like this zener bridge thing. But capacitive dropper do make sense, they are all around us. Most SPSs do need them as bootstrap voltage dropper at startup. If the consumed current is low and constant a dropper is your choice. Transformer start in a higher power class and are always more expensive then a cheap capacitive dropper (right, without expensive high voltage zener diodes)

Voltransistor

7 years ago

@hurz thankyou so much ☺👍

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