This circuit was found in an American documentation from 1969. The circuit is a multi-indicator with resistors typically 47 k for R1 and 100 k for the others.
This amplifier was found in a 1969 Mullard documentation. The circuit uses transistors that have as...
This circuit was developed to test suspect 4001 and 4011 integrated circuits. The circuit is from...
This traditional detector configuration is from an old publication where the MC1555 is the...