This CMOS circuit was obtained in a 1980s documentation. The circuit has a 10-second time delay before firing. The transistor is a general-purpose type and power supply according to the relay.
This circuit was obtained in Motorola documentation from 1969. The components are from that time. In...
We found this circuit in a Poptronics of the 90s. The circuit operates from 100 kHz to 30 MHz and...
We found this amplifier with 50 MΩ input resistance in the May 1989 Radio Electronics magazine. The...