This analog ammeter circuit was found in documentation from the 1980s. The components admit equivalents and the scales are determined by the values of the components in the range selection.
This electronic rheostat with SCR was found in the June 1964 Radio Electronics magazine. The SCR...
This circuit consists of a small inverter to light a low voltage neon lamp. The circuit is from a...
Unlike the CIR4620 circuit, the circuit shown in the figure operates by capacitance. This means...