This circuit was found in an Electronics Now of the 80s applying to NiCad batteries of the time. The circuit is powered by a 12 VAC source, for example, the secondary of a transformer.
The circuit shown in the figure is indicated for alternative sources of energy, such as those...
This small audio amplifier of a few watts found in television sets was published in the magazine Radio...
The astable multivibrator shown by figura 1 has a very low current drain and can be powered from 6...