General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs that are not common components today. Note the timing components that may change.
This circuit is used to match a high impedance input source with a low impedance output device...
This crystal-controlled oscillator was obtained from an American 1980s documentation. The circuit...
We found this adapter in a 1970s American documentation on instrumentation. It is suitable for analog...