This 80's General Electric circuit is guarded by the noise-guard for operating current. The circuit has an input sensitivity of 3 pA. The font must be symmetrical.
This circuit was obtained in an Electronic Design from the 90s. The circuit uses transistors from the...
This is a circuit of an 80's American documentation and can be implemented with modern components....
This circuit was found in a 1980s US publication. There may be some difficulty in obtaining the...