Motorcycle direction indicator (CB8957E)

Found in a Popular Electronics from the 90s, this circuit can be adapted to use LEDs. The power FET can be of almost any type.

Distribution Amplifier (CB4922E)
This amplifier is from a 1990s Linear Technology component manual. The circuit requires...
VCO without varicap (CB9435E)
This circuit was found in a 90s RF Design. It is an oscillator that can reach 800 MHz, with the...
Crystal tester (CB9640S)
The transistors used in this crystal tester are general-purpose types. The circuit was found in...