Inverting CMOS Amplifier (CB25577E)

This gain 10 CMOS op amp was found in the May 1993 issue of Electronics Now magazine. It is applicable to any op amp.

Electronic Stimulator (CB21647E)
This circuit is from a documentation from the 60s. The circuit can be built with transistors like...
Table dimmer (CB7220E)
Found in a 1966 General Electric documentation, this dimmer should only be used with incandescent...
Relay Control shield or interface (CB15483E)
To control relays safely with double insulation, we suggest the circuit in the figure. The optical...