Voltage Regulator Modules
A whole range of small regulator boards or modules are available from your favorite on-line shopping sites for very little money. Â I gave the most recently arrived unit a quick once over.
The on board voltmeter is fairly accurate but if you need to adjust voltage exactly I suggest a good multi-meter.
I measured quiescent current at 25 mA (compared to 5 mA with a 7805).
Voltage regulation was good; switching an 11 ohm load at 5 volts did not result in a noticeable drop. Â The regulator IC stayed cold – at least until the load resistors started smoking.
I put my scope across the load and found an interesting [Eastern Rockies] waveform about 0.5 V at 10 KHz.
There is one 220 uF electrolytic across the output. Â The scope suggests that some additional output filtering is in order.
All in all a useful piece of kit for only a very few dollars.
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about 6 years ago
Eastern Rockies??? Where is that? haha