Published by Philips in 1965 documentation, the sensor for this circuit is a common LDR. The transistors are general-purpose types from the time, only TR3 is a power type according to the load.
The circuit shown in the figure was found in a 1974 publication. The field effect transistor may...
April 2017 - The new Alps UGMZ2AA Bluetooth communication modules can be found on Mouser...
We found this circuit in a Texas Instruments documentation from the 80s. The circuit uses simple...