This bench circuit was found in Radio Electronics magazine from June 1958. The circuit does not have an external power supply. The circuit generates signals from 12 Hz to 180 kHz in 4 bands.
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
This circuit is from a 2001 Poptronics. The magazine no longer exists, but the components used are...
Found on an Elektor from the 90s, this TTL circuit generates a predetermined number of pulses with a...