This TTL time base for 60 Hz or 50 Hz can be used in instrumentation circuits or even with microcontrollers, serving as a precision shield. The circuit is based on 7400 NAND ports and two transistors.
We found this configuration in the Linear applications Handbook of the National Semiconductor of...
Found in the January 1998 issue of Electronics Now, this circuit uses a standard American TV...
This circuit was obtained from an old American publication. The uA702 is a differential amplifier and...