Blown fuse indicator (CB22129E)

This car circuit can be used in other applications with the proper choice of resistor. We found it in old English documentation.

Unijunction oscillator 2N491 (CB23608E)
This is an old circuit with a unijunction transistor from that time. We found it in a Radio...
Sequential Flasher (CB25405E)
This conventional 4 channel circuit with the 4017 and 555 was found in the November 1991 Radio...
Fast Current Sensor with Alarm (CB5895E)
This circuit is from a 2005 Linear Technology manual. The circuit uses an LT6700-3 and has an...