We found this circuit in a 1968 Electronics World. The potentiometer should be set to trigger the SCR when the battery is fully charged.
January 2017 - Atmel / Microchip's ATA8520 single-chip card for SIGFOX RF transceivers can be...
The indicated circuit generates frequencies in a range from approximately 500 Hz to over 5 kHz...
This sophisticated sinusoidal audio signal generator uses a Wien bridge configuration with an...