With this circuit it is possible to obtain a higher voltage from a zener diode. The circuit is from a 1970’s EEE. The device used as a constant current source is uncommon today.
This H-bridge shield circuit appears several times in applications in this section and on this...
This circuit can be used as a shield based on 555. The calculation of the timing network is done...
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...