The circuit detects the Sun automatically and turns towards it. In order to make the best use of solar energy, a solar tracking system circuit TLC27L2 opamp, a motor based on MC34164 integrated circuits, driven with 2N3906 and 2N3904 transistors as a bridge, can be used for simple applications.
In addition, 2 solar cells are used as a power source in the circuit, so there is no need for an additional power source, but it is not a very powerful circuit according to the motor size and the general structure of the system, it is ideal for simple applications.
Solar Tracking Circuit
Source: siliconchip.com.au/cms/A_101989/article.html Solar Tracking Project TLC27L2 MC34164 Motor Control Circuit schematic pcb files alternative link
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Published: 2009/06/03 Tags: analog circuits projects
Simple Tone Control Circuit RC-Filter Bass Treble Adjustment
2 100k potentiometer resistors and capacitors with a simple inexpensive quite well that works a tone control circuit bass and treble controls are doing RC low-pass filter the low-frequency bass sounds RC high-pass filter section treble passes
With this state of the circuit can be used for mono signals only for two-channel stereo dual stereo 2x potency can use other materials, then increases