Description A very simple LED flasher circuit using an LM3909, these were great because you could connect a 1.5v battery up to them. They are hard to come by nowadays. …
Author
getelectronics71a
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Description This is an adaptation of the PSU that uses a 7805 and can supply higher current. You need to use an appropriate heatsink for the 2N3055 transistor, you could …
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Description You can, with a little modification use a 7805 regulator to generate a variable voltage output, in the example below the output can be 5v to 30v. At higher …
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Description This is a basic 9v to 5v PSU using a 7805 regulator, this was a common circuit to build for building a low cost 5v stabilised DC supply using …
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This is a basic DC power supply using the 78XX voltage regulator. Schematic Parts List QTY PART-REFS VALUE — ——— —– Capacitors ———- 1 C1 1000uF 1 C2 100uF Integrated …
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This is the most basic example of using a LM317 voltage regulator. The variable resistor (R1) and R2 are used to select the output voltage. The Lm317 is capable of …