This circuit is from 1968 American medical documentation. The circuit generates pulses of excitation that are applied to the patient's heart. The components are from the era. The pulses are 1 ms.
To obtain more output power from an operational amplifier, we can use a transistor, as shown in...
This very low current negative bias source can be used in any inverter. The output voltage is...
This circuit is from a 70s linear integrated manual. The integrated circuit used is uncommon today...