This 9 W amplifier with transistors from the 60's was found in documentation of the time. The output transistors must be mounted on heat radiators and the power supply is included.
In the figure we have a more elaborate application of a timer that activates two relays in a...
This circuit triggers a small water pump when the humidity detected by the sensor is reduced in a...
This circuit makes use of the Linear Technology LT6100. We find it in a 2005 company manual. The...