Quasar ElectronicsAS3079BKT - Light / Dark Activated Switch With Hysteresishttps://www.quasarelectronics.co.uk/media/ecom/prodsm/3079b.jpgThis kit uses the LDR and built-in hysteresis of the LM741 op-amp IC circuitry to allow the switch to operate with small and gradual light changes without the problem of relay chatter at the trigger threshold...Electronics > Circuit Components > Printed Circuit Boards > Development Boardsquasar_diy_k79b3079BKTGBP9.95Quasar Electronics LimitednewConditionInStockhttps://www.quasarelectronics.co.uk/Item/3079b-light-dark-activated-switch-with-hysteresis
AS3079BKT - Light / Dark Activated Switch With Hysteresis
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Product Formats Available : Pre-Assembled Module (AS) or Self-Assembly Electronic Kit ( Soldering Required)
This board uses an LDR and built-in hysteresis of the LM741 op-amp IC circuitry to eliminate the problem of relay chatter at the trigger threshold. This allows the switch to operate effectively where there is a gradual light change (i.e. dawn and dusk).
The Light/Dark mode switch is used to select either light or dark activation of the relay. This enables the unit to be operated in its low-current standby mode for the majority of the time according to your application.
Adjustable turn-on sensitivity
Switch to select either 'light' or 'dark' activation
LED status indicator
Regulated 10 - 15Vdc
Light Activated: <1.5mA standby, <46mA relay active Dark Activated: <2mA standby, <45mA relay active