This circuit was found in a 1980s American documentation. The data circuit has a low speed, according to the components used. Transistors support modern equivalents.
This 10 mA microammeter circuit can measure currents of 50 uA. The circuit is from a publication from the...
For triggering with the negative transition of the input signal, the circuit indicated for 0 4047...
This circuit was found in a Electronics Handbook (1989). The shown amplifier provides a few...