We found this circuit in December 1986, Radio Electronics magazine. It uses 3 inverters and has the frequency determined by the crystal. The power supply is 5 V.
This second amplifier is based on the integrated LM108 and has a differential input. The resistor...
This circuit was found in a 1968 Motorola documentation. The circuit can be implemented with...
Nothing more useful on the bench than a variable voltage source. This is the source we found in...