No inductive analog relay circuit


Posted on Mar 28, 2007

As shown in FIG relay is non-inductive analog circuit theory. working principle: 220V power supply via a load RL, R1, D1 ~ D4, ZD1, as Q4, Q3 in turn provide positive and negat


No inductive analog relay circuit
Click here to download the full size of the above Circuit.

ive half cycle offset; through R3, D5 ~ D8 provides power for the optocouplers Q1 simultaneously. When the current level TTL circuit outputs a high level signal, optocouplers in the city turned positive half-cycle, thus producing a pressure drop R5 ends, triggering SCR conduction, electrical work load RL. As a function of the entire circuit relay, but will not produce the reverse induced voltage, thus avoiding the load is high back pressure breakdown the possibility of damage. C1, R6 pulse absorbing element, R3 from limiting the role. To avoid RL when inductive load, 90 phase thyristor power supply voltage generated by optocouplers, power optocouplers this circuit is taken from the SCR anode instead of directly from the mains.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Energy Saver Relay Coil circuit and explanation
555 timer bassed Electronic lock circuit with explanation
Telephone Ringer Circuit
Tube Mic Pre-Amp
pdf led matrix cube controller 5x5x5
Push Off Push On
Inductorless 5V to -5V Converter
100 MHz frequency and period counter using the Intersil ICM7226B 40 pin DIP
Using a TENS for relief from RLS or Restless Legs Syndrome
Disconnect anti theft alarm circuit



Top