This circuit is from Delco Radio found in a 1968’s documentation. The transistors are of the time and are not given information about the driver transformer. Note the high supply voltage.
This interesting circuit triggers the alarm when sunlight hits the sensor. The circuit can be used to...
This circuit, found in a 2000 documentation, is used in simple artificial intelligence and robotic...
This amplifier became famous in the 1970s, it was sold in kit by Ibrape, Philips subsidiary for...