This circuit of old medical documentation generates pulses in a ratio of 20 to 300 and duration of 3 ms. The circuit has biomedical applications and can use modern equivalent components.
We found this circuit in an American documentation from the 60's. The transistors are made of...
The accuracy of this circuit depends on adjustments made with capacitors of small tolerances of known...
The figure shows how to implement an OR function with two inputs, using a relay. The relay...