Voltage to Current Converter (CB6096E)

This circuit is from a 1980s Signetics documentation. Equivalent operational amplifiers may be used. The power supply must be symmetrical.

AC Line Interference Filter (CB452)
This filters blocks radio interference or noise coming from the AC Power line. Noise such as the...
Regulator Crowbar (CB5884E)
This crowbar protection circuit for non-regulators blows the fuse when the load voltage exceeds a...
Logic Probe (CB5910E)
This sophisticated logic probe for 5 to 12 V circuits (CMOS and TTL) was found in a 1980s...