1-Wire Temperature Control

Intro       Controller Description       Circuit Diagram       Interface Application       Download      

Controller Circuit Diagram:

Circuit diagram- Click image for higher resolution.
fig. 1 Click image for higher resolution.
Two methods are available for connecting the controller board to the output relay - an on-board relay ( fig. 2 ) or an external relay ( fig. 3 ) . The second method is suitable when the distance between the controller and the apliance is very long,but this way requires a local power supply.The DS18B20 is always powered by the 1-Wire data line (" parasite power ").
On-board relay - pins 4 & 5 closed:External relay - pins 4 & 5 opened:
Internal relay - Click image for higher resolution.
fig. 2
External relay - Click image for higher resolution.
fig. 3
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