Each circuit is a simple well tried design. One uses two transistors in a super-Darlington set-up. The second uses the LM741 op-amp, and the third uses a Schmidt trigger design.
Each board has a PCB-mounted switch to convert the circuit from light to dark switching and vice versa. All board have an SPDT relay output rated to switch resistive loads of up to 2 Amps @ 48Vac or 28Vdc max.Specifications
|Supply||Regulated 12Vdc (Order Code 660.446UK with connector 778.106)|
|Output||1 x SPDT Relay|
|Up to 48Vac or 28Vdc @ 2 Amps max. (Relay Datasheet)|
|Output Connections||NO, NC, C (Relay FAQ)|
|Board Connections||Screw terminal blocks|
|Product Formats||SELF-ASSEMBLY Electronic Kit (KT) Product Formats Info|
|Documentation||3079A User Manual|
3079B User Manual
3079C User Manual
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