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This soft start dimmer was found in a Motorola documentation from 1968. However, it can be implemented with modern equivalent components like the 2N2646 for the Unijunction.
Found in a 90s American documentation, this circuit that was used in cars of the time, detects low...
This circuit works as a useful field meter for radio amateurs. We found it in documentation from...
This circuit was found in an 80's Electronic Design. The frequency depends on the crystal and the...