This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps. The diodes can be general purpose or even 1N4002. The transformer is 6.3 V with 100 mA or more current.
This circuit converts the 12 to 13.6 V of a battery into 6 Vwith current up to 1 A. We can use it...
The purpose of this circuit is to amplify the signal of a phone pickup and to be able to reproduce the...
This circuit was found in a 1980s documentation. Modern operational amplifiers can be used. The...