Isolated shield using photo SCR (CB8077E)

This circuit is from a Popular Electronics from the 90s. It uses an opto-coupler with SCR directly controlling a 20 mA current load.

| Clique na imagem para ampliar |

Bridged Output Operational Power Amplifier LM12 (CB14391E)
In the figure we have the way to connect two high power operational amplifiers LM12 to double the...
Solenoid Current Monitor (CB5399E)
This circuit uses the Linear Technology LT6505 and was found in a 2005 manual. The circuit is for 24 V...
Lamp Flasher LM3909N (CB4556E)
a This circuit was obtained from a 1978 Practical Wireless. It causes a low-power 1.5V lamp to...