| Author | Views | Views Today | Rank | Comments |
| 101,479 | 9 |   |
71 |
| Author | Views | Views Today | Rank | Comments |
| 101,479 | 9 | |
71 |
| This dual polarity power supply is easy to build, requires few parts, and is adjustable from 0-15 volts. It is great for powering op amp circuits, as well as other circuits that require a dual supply voltage. |
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| PLACE A 10uF electrolityc between pot wipers and ground. this will iprove hum rejection and Kf...I would put a 100R trimpot in series with one of the pots, because you can never get a double pot that has equal resistances on both sliders. | ||
| How is it possible to vary voltage from 0 to 30V instead of 0 to 15V? | ||
| This is the same exact circuit that the data sheet for the LM317 shows for a 1.2V - 25V power supply. This one is just using a center tapped transformer to feed the bridge. The circuit from the data sheet is copied except using, on the bottom it uses an LM337 as the regulator. The center tap is the DC circuit ground. Real original. (Editor's notes: How odd that it's on the datasheet, as I designed this circuit some 15 years ago for a project and have never even looked at the datasheet for these ICs.) |
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| I need dual polarity power supply cvircuit diagram without using centert tap transformer(or if possible,without using transformer i.e. 'transformerless dual power supply' | ||
| Your C1 and C3, C2 and C4, C5 and C6, and C7 and C8 are in parallel which looks like overkill. For example, you simply have a 2201 micro Farad cap made out of C1 and C3. Was this for some purpose? (Editor's notes: Filtering.) |
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| I only need d schematic diagram of the +15v and -15v dual power supply and the components | ||
| Hi, I like the dual supply circuit, and would like to know if Transformer T1 has no centre tap, with the rest of the circuit remain the same, is the GND still applicable? Singapore. | ||
| Hi, Can i have the schematic diagram of a dual output DC power supply of output +15 volts and -15 volts and the schematic diagram with not more than 15 components in it. Help me to identify the sub-sections[explanation of each and every component] that make up the power supply and an explanation on the operation of the power supply. Thank you. Please reply ASAP. | ||
| Hihi.. Ur notes say that U1 and U2 can only go down to a min of+/-1.2V if add two 1N4003 diodes in series. Than how to make a power supply with a voltage output range from +15V and -15V? | ||
| i am not getting any idea about how to connect the U1 and U2 ics, because the pins are labelled as Vin, Vout and adj in the data sheet, but here the pins are labelled as 1,2,3. can anyone guide me??? (Editor's notes: U1: 3 = In, 1 = Adjust, 2 = Out U2: 2 = In, 1 = Adjust, 3 = Out) |
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