We found this circuit with transistors in a Philips documentation from 1968. The double transistor can be replaced by discrete married types. The power supply is symmetrical.
This crystal-controlled oscillator can generate signals up to a few dozen megahertz. We found it...
This circuit checks the oscillation capacity of a transistor. The circuit can be used with fixed...
This simple circuit was found in the Spanish magazine “Todo Electronica”, in an edition of 1996....