This 1970s RCA circuit can be triggered by light or dark, depending on how the LDR is connected. The controlled load depends on the triac.
With a light pulse on the Q1 sensor the circuit turns on and locks. To switch off, a light pulse...
March 2017 - STMicrocoelectronics' new LoRaWan B-L072Z-LRWAN1 STM32 development board can now be...
This circuit is from the manual of the components used, from the 80s. The circuit is valid for...