This transistor class B 5 W amplifier was found in a 1969 Mullard documentation. The transistors are from that time, and modern equivalents may eventually be used.
If we modulate a beam of light from an LED, for example, we can receive this beam of light at a...
This circuit is from a publication of the 70s, but it can be easily assembled with the BC548. The...
In the circuit in the figure, when a pulse of light falls on the LDR, the circuit arms with the...