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.
June 2017 - The new touch screens with resistive sensors of the FK Series from NKK Switches can...
This circuit, suggested by Signetics can be used as a shield. Modern operational can be employed...
Instead of the lamps, LEDs can be used in series with 470 ohm resistors. The circuit is from an...