This circuit is from 1970 documentation. The SCRs are types of the era that can be replaced with 106 Series equivalents. The circuit is powered with 100 V dc.
When the sensor connected to points A and B is activated, removing the ground from the base of Q1...
This oscillator was found in the 1994 National Instruments Linear Applications Handbook. The...
With the circuit shown in the figure, the frequency of a 5 MHz oscillator controlled by crystal can...