Neon Fuse Blown Monitor (CB24104E)

This circuit was found in the January 1971 Radio Electronics magazine. It keeps the light flashing if the fuse blows.

Logical Probe (CB5908E)
The transistors of this circuit may be general purpose and the power supply comes from the TTL...
Manually Triggered VCO 4046 (CB25758E)
We found this circuit with the CMOS4046 in the August 1994 Electronics Now magazine. The circuit is...
4 input mixer (CB6309E)
This setting appears with variations at various points on this site. This is from a Motorola...