We found this version of the automotive tachometer in a 1980s publication. Variations from other sources appear elsewhere in this section. The indicator is a 0 to 1 mA milliammeter.
This circuit turns on and off from pulses applied to the CLK input. The output 0 goes to the “’1"...
This circuit tests crystals up to a few megahertz with ease. The circuit is from a 1977...
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...