This circuit uses the LM2931 which is not a common component today. What it does is to activate a lamp causing it to blink at a frequency determined by the capacitor.
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This Japanese commercial transistor radio circuit was found in a 1967 documentation. The...
The circuit shown in the figure is characterized by stability and the use of a common component. This...
January 2017 - Texas Instruments' new TPS7A19 Low Voltage Dropout (LDO) linear regulators are now...