Posted by dapj20 on Jun 26, 2019 in Analog-Mux, Industrial-Instruments
A single Voltmeter or Digital Panel Meter DPM can monitor 8 Analog inputs from sensors or potentiometers using a Mux chip and creating simple digital controls for that.
Industrial Process Control Circuits
The Pushbutton Logically Interlocked Controls are Auto and Manual. For Manual Setting Up and Down push-buttons select the channel. In the Auto mode the 4029 counter gets pulses from a 4093 Schmitt Nand Gate wired as an Oscillator. This circuit shown for six channels.