Isolation and zero voltage switching logic


Posted on Dec 29, 2012

These two simple circuits provide zero voltage switching. They can be used with full wave bridges or in antiparallel to provide full wave control and are normally used to trigger power thyristors. If an input signal is present during the time the ac voltage is between 0 to 7 V, the SCR will turn on.


Isolation and zero voltage switching logic
Click here to download the full size of the above Circuit.

But, if the ac voltage has risen above this range and the input signal is then applied, the transistor, Ql, will be biased to the "on" state and will hold the SCR and, consequently, the relay ' 'off' until the next zero crossing.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Motor Speed control with optocoupler
7-segment display with encoder
Deactivating-battery-sensor
Single Ltc Power Supply Circuit
The wireless radio frequency based on ATmega16 and nRF905 receives and dispatches system design
magnet
block diagram function generator
nicd battery charger schematic
Schematic of a Breadboard Arduino
How I built a shortwave Armstrong FET regenerative receiver
Audio Speaker Crossover Circuit
Ethernet remote device controller sensor circuit



Top