Found in 1980s Electronic Engineering, this circuit uses common phototransistors as sensors. The circuit is CMOS using an integrated 4011.
March 2017 - Mouser Electronics announces its new TPSA89 voltage regulator from Texas Instruments with...
This Harris circuit from the 90's is intended for recording old EPROM memories. The circuit uses...
We found this circuit in an old Radio Electronics. The transistors can be the BC548. The circuit...