NE602 Crystal Oscillator (CB26005E)

This oscillator reaches 50 MHz with an overtone crystal. The circuit is from Electronics Now magazine from February 1997.

Solar cell bank (CB20480E)
In the figure we have the way to connect 6 solar cells in order to obtain higher voltage and...
Frequency converter for precision voltage (CB6346E)
This circuit has a maximum frequency of 10 kHz and a linearity better than 0.01%. The circuit is...
5 W Transistor Amplifier (CB10749E)
This circuit was obtained in a 1961 magazine, but it can be easily assembled today, as the...