Questions tagged [bipolar-power-supply]

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Boost converter with regulator

I have set up a boost converter with a regulator in LTspice, but I get a lower voltage at the output than at the input. What could be the reason?
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Making a unipolar HVPS bipolar safely

I have a Keithley 5kV power supply (2290 model) that I use for high energy physics experiment. It has resolution of 1V and current resolution of 1uA. The range that it offers is +0V to +5000V via its ...
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51 views

Standard approach for a split power supply ADC?

I'm currently working on a project that will incorporate an AD7124-8 ADC, which as far as I understand can accept true bipolar inputs when provided a split supply. I tried to dig around for an app ...
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203 views

How do I calculate the maximum load on a center-tapped AC/AC transformer for a bi-polar linear power supply with full wave rectification?

I have a 24 VCT AC to AC step-down transformer, which has three wire leads on the secondary. I'll call the secondary leads X, Y, and C, where C is the center tap. With a DMM, the voltage between X and ...
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91 views

Bridger rectifier producing non-equal voltages

I am making a bi-polar 12V power supply with a centre tapped (12-0-12) AC transformer. On inspecting the voltages after the bridge rectifier (KBU-4B), the negative side produces -26V and the positive ...
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General Guidelines for Bipolar ADC Power Supply

I’m building an AC Power Meter using the ADS131E08 from Texas Instruments and am trying to find the best way to generate a 400mA +/-2.5V supply from a +5V source. The 5V source is the isolated DC-DC ...
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1answer
50 views

Designing of a voltage to current converter schematic

Voltage is from a sensor (0 to 4 V), and load is within -100 nA and +100nA, where 0V should be converted to -100nA and 4V to +100nA. Here is my last trial (picture below.) I got the -100nA for 0V and +...
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57 views

Troubleshoot a bipolar amplifier circuit

I am working on a project in which I am attempting to interface with an ILDA galvanometer from an arduino to move around a projected laser beam. I am following a guide linked here, particularly step ...
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2answers
110 views

How to create bipolar power supplying from Powerbank 5V 3A

I have 2 ADS1299 analog to digital converters(https://datasheet.octopart.com/ADS1299IPAG-Texas-Instruments-datasheet-17020782.pdf). I need to give them bipolar mode supplying but I must use a ...
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3answers
295 views

How to convert +5V power source to +/-5V power source

To supply op-amp 1, I need a power supply voltage of +2.5V and -2.5V. To supply op-amp 2, I need a power supply voltage of +4V and -1V. The outgoing signal from the op-amp stage will be fed into an ...
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593 views

LM2576-ADJ bipolar power supply troubleshooting

I'm hoping to find some help here troubleshooting. The circuit in question is a bipolar power supply that makes use of two LM2576-ADJ. The desired output voltage is +12v and -12v. I've breadboarded ...
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2answers
209 views

Is there such thing as a Bipolar Wall-wart?

Looking for a UL approved device that gives +9V and -9V from the 120VAC wall. I need the +/-9V to power a circuit and I don't want to make an extra PCB. My alternative is to have two 9V wall warts but ...
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153 views

Low Voltage, High Frequency, High Amperage Power Supply Design

For an ongoing project of studying magnetic properties of various metals we need to use a power supply which can generate 25 V peak to peak, frequency 50- 500 kHz, 5A (PP) current. Frequency would be ...
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1answer
68 views

Decreasing output of a voltage doubler

I'm trying to build the following circuit. The advice on the site I got it from said to try using 1n4001's instead of 1n5817's, because that would get the voltage down to around 15V, which is what I ...
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47 views

Generating high current negative supplies

I'm trying to generate a high current negative supply (30A, -2V). This is to be a negative symmetric supply along with a (30A, +2V) rail, with an actively driven ground which I need to be system ...
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1answer
51 views

Using 2 postive regulators with 2 prong power supplies for bipolor power supply

My nephew and I have been working on a circuit that uses +/- 4.5V. Up until now we have been using 2 3-AAA battery holders to supply each leg and now wish to move to mains power. My question is, ...