Frequency Doubler MC1595L (CB14589E)

We found this circuit in Motorola's Linear Databook in 1990. The component used is not common today.

Sustain Pedal (CB12501E)
This circuit is from a 1979 documentation. The critical component is the CA3130 operational...
Antenna Amplifier (CB25885E)
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...
Simple Optical Switch (CB16929E)
This circuit shows how to control a TTL logic gate with a phototransistor. The phototransistor supports an...