Posted on Jun 29, 2012

Snubber circuit R2C2, as shown, might be necessary since Rl and Cl are tailored for optimized triggering and not for dV!dt protection. Fiber-optic pairs can be used with discrete SCRs to switch thousands of volts. A photon coupler with a transistor output will limit the trigger-pulse amplitude and rise time because of CTR and saturation effects.

Click here to download the full size of the above Circuit.

Using the HllCl, the rise time of the input pulse to the photon coupler is not critical, and its amplitude is limited only by lite HllCl turn-on sensitivity. The load can also be connected to the cathode as illustrated in Fig. 67-3B.

Leave Comment

characters left:

New Circuits



Popular Circuits

Lego Double Rotation Sensor
Audio Ditherizing Circuit For Digital Audio Use
Pulse Width Modulators using LM339
1MHZ Digital Frequency Meter
Police Siren Circuits with IC555 Schematic Diagram
Long range FM transmitter
IR Harp
Odd-ball PI circuit identification request and headroom question
PBL3717A motor stepper driver circuit design electronic project
Direct Conversion AM Radio
RF Circuitry Links