DESCRIPTION. The L78S00 series of three-terminal positive regu- lators is available in TO and TO-3 packages and with several fixed output voltages. L78S12CV 2A Positive Voltage Regulators. OUTPUT CURRENT TO 2A OUTPUT VOLTAGES OF 24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT. L78S12CV datasheet, L78S12CV pdf, L78S12CV data sheet, datasheet, data sheet, pdf, ST Microelectronics, 2A POSITIVE VOLTAGE REGULATORS.
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A more reliable solution is to add power bjt s around a single LM Mickey Mouse connects dataasheet in parallel.
Sometimes he adds an equalizing resistor in series with the output of each one.
Then they share the load but the voltage regulation is lousy. They won’t be exactly the same unless they are separately adjusted to have exactly the same output voltage so the one with the highest voltage will power the entire load until its voltage drops down maybe when it gets too hot?
The first one will be very hot and the second one will be cool. Andyc Active Member Jan 3, Is there a reason they would do it this way? Why not use one of these insted of two of the ?
Are they that much cheaper? All three adjustable voltage regulators can handle the same small amount of heat before shutting down.
L78S12CV 데이터시트(PDF) – STMicroelectronics
All three reduce their output current when there is more than 10V or 15V across them. So maybe it is best to add a current-boosting power transistor to an LM circuit. Roff Well-Known Member Jan 3, If they are configured as current sources instead of voltage regulators, they can be connected in parallel.
Can you post a partial schematic? Optikon New Member Jan 3, I didn’t get a chance to draw out the diagram, but this device is a “professional”, high quality unit.
L78S24CVDatasheet(PDF Download), All35Page – STMicroelectronics
The construction is near mil-spec, and a majority of the crucial components are custom mfgr’d. The company name is Datasehet. Oh, and the dang thing weighs well near 50 pounds with quite a large torroidal xformer in it! Optikon New Member Jan 4, Hero Banned Jan 4, It’s probably a constant current battery charger so there’s nothing wrong with the design.
I think you’re right.
(PDF) L78S12CV Datasheet download
It is to recharge a deep cycle battery and there is no supporting circuitry to provide a low current maintenance charge. Almost sounds like a device that would get used in an environment where power failures occur regularly with the battery getting cycled quite often. Rio71 New Member Jan 4, Roff Well-Known Member Jan 4, You must log in or register to reply here.