This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The circuit is of the commercial type and is powered by two 12 V batteries or by a symmetrical source.
We found this circuit in the Linear Applications Hanbook of the National Semiconductor in 1994. The...
This capacimeter was obtained in European documentation from the 1980s. The indicator instrument, a...
This circuit triggers a load when the sensor detects humidity. The triggering point is adjusted by...