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.
In the figure we have the way to use a shift register to divide the frequency of a signal by 9....
We found this circuit in Texas Instruments documentation from 1986. The circuit produces a...
This interesting transformerless class B output stage was found in a patent registration published in...