Broadband Amplifier (CB21859E)

This circuit has a voltage gain of 30 times and passband of 14 MHz. The circuit is from the 1974 Ferranti transistor manual.

Limiter Amplifier (CB12468E)
This amplifier for effects on musical instruments can be mounted with BC549 transistors. The...
RF Oscillator LM3909 (CB14292E)
We found this circuit in documentation from National Semiconductor. For the medium wave range the...
Insect Repellent (CB6888E)
According to what is said, the bugs are the female insects (mosquitoes, muriçocas and others)....