This is the receiver from the previous alarm system. The circuit is from Radio Electronics, April 1989, and has an LDR as the sensor. Optical devices should be used to improve performance.
This setting is valid for other transconductance operational amplifiers. The circuit is from...
When the supply is established, the load only receives the supply some seconds later, a time that...
With an output of 7.5 W at 110 V this circuit was found in a 1968 Motorola documentation. The circuit has...