5V Negative Regulator LT1033 (CB14598E)

We found this circuit in Linear Technology Applications 1993. The maximum output current is 5 A and the accuracy depends on the resistors used.

Dwell Meter (CB4961E)
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...
MICRF114 Remote Control Development Kit (COM107E)
September 2016 - It can be obtained from Mouser Electronics a kit for developing wireless remote...
Solar Radio (CB11510E)
This simple solar powered MW receiver was obtained from a 1974 Popular Electronics. The transistor can...