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Bookmark or Share- Voltage regulator circuit to drop 15.3v output to recommended 14.4vHere's the LTspice sim of a simple unregulated charger with a unregulated output voltage of 15.3V open circuit, and an internal resistance of 0.35Ω to limit the charge current, with two series diodes to limit the maximum charging current.
- 2N3055 alternative in a TO-247 or TO-220 package...? - All About CircuitsAnyway, the regulator for this 12V supply is supposedly a 2N3055 in what appears to be a TO-220 case, bolted to the side of the chassis. The collector connects to unregulated ~20VDC, the base is connected to a 13V zener to ground, and the regulated 12V (I guess more like 12.4) is taken from the emitter.
- How much power can be generated from a dc motor as a generator?theoretically you could get a lot of power from it. the question you're asking is probably not fully fleshed out, as the voltage depends on rpm, magnetic field strength, number of windings, but I believe is proportional to rpm, so the faster you spin it, the more power you could get until the internal resistance of the windings and hysteresis losses in the cores causes the metal to melt...
- Powering an Op-Amp with a split supply | All About CircuitsA lousy old 741 work with no negative supply (0V) if its positive supply is from about 10V to +36V, its inputs are from +3V to 3V less than the positive supply and its output can go no lower or higher than about 3V to 5V away from a supply voltage.
- Simple Solar Powered LED Circuit - All About CircuitsLifePo4 can't cause a fire as I understand it, because of the chemistry. Westinghouse uses them in their higher end solar landscape lights. The negative to unregulated voltage is reduced capacity and cycle life. My unregulated cell has a very short run time now. Agreed, using a zener in a low voltage, low capacity battery charger is not a good ...
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