We found this precision circuit in a manual from the 80's. The operational amplifier is of a common type at the time, and equivalents can be tested. Transistors are general purpose types.
This circuit is from 70's documentation. The output transistors can be BC548 and BC549. The driver...
The maximum frequency of the oscillator shown in figure 10 is on the order of 5 MHz, depending on the...
This circuit is from a Radio Electronics magazine from May 1989. The power supply must be...