• Ads

Temperature Controller Main Card

This contains the Main card with a Power Supply and Relay Control. On this card is connected the Display ICL7107 – Temperature controller.

The Thermocouple and Control Modules can be plugged into this card, these change the type of control and type of inputs. This way this can be made into any parameter controller with any type of input and output. But it is all set in production, not configurable at site.

So even if you make a 4-20mA output Flow Controller with this, the Main card and Display card remains the same. Only the Modules change. No Connectors are used, to make it vibration resistant.

The PCB Layout is here

Display ICL7107 – Temperature controller

This is the Display Circuit and PCB part of of section Temperature Control.

The above circuit is powered by +5 and -5 from a LM7805 and LM7905 pair. If +/- 12V or +/- 7.5V is used in opamp or digital parts, then use below circuit for the DPM section.

5 V Dual Supply with Zeners

The PCB for above

The PDF Circuit for above Display Card STC1000