This circuit, obtained from a 1965 magazine, can still be assembled using some modern equivalent components. The transistors may be BC558 and the transformer is obtained from a disused transistor radio.
This is the circuit of a “follow the line” type robot with inductive sensors published in Radio...
This AD converter uses common components and can be implemented based on modern operationals. The...
The circuit in the figure provides a precision output stabilized at 10 V and makes use of a...