This circuit is from a 1965 Motorola documentation. The transistors are of the time as is the uninformed magnetic sensor.
The integrated circuit used is equivalent to the 555 and the transistor can be the BC548. The...
We found this circuit in a 1977 documentation. The XR2206 is not easy to obtain, but it consists of a...
This flasher or neon signal powered by batteries was found in old documentation. The transformer must...