Skip to main content
Electrical Engineering

Questions tagged [constant-current]

Ask Question

Questions regarding constant-current supplies, devices and applications, as opposed to constant-voltage supplies. The voltage can vary while the current remains the same. Common in LED lighting applications and battery charging.

699 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
0 votes
2 answers
84 views

I have 2 COB chips rated upto 400ma at 36v connected in parallel with a 600ma constant current driver (54v max) On testing both led worked fine but had minor difference in lumens at some levels as I ...
Mufaddal's user avatar
  • 9
3 votes
2 answers
181 views

I am looking for help in replacing manual 10-way switch with MCU controlled schematic that will emulate those switches and resistor chain. The third-party device is using constant current source to ...
Maple's user avatar
  • 13.7k
4 votes
2 answers
377 views

Title says it all: I want to build a very simple 0-100 mA constant current source, controlled by a 0-2.5 V signal from a DAC. Purpose: To control a PVQ13-5L solenoid valve. The valve is rated for 24 V ...
Michael's user avatar
  • 312
2 votes
4 answers
409 views

I'm designing a very simple constant current source (CCS) to drive my purely resistive load of 3 Ohm. The CCS is being controlled by a voltage source from a DAC ranging from 0 -> 2,5V (Vin). In ...
Michael's user avatar
  • 312
0 votes
1 answer
81 views

I plan on connecting my 100 W (20 V at 5 A) power bank to my laptop's power supply port by using a USB C to DC barrel adapter. However, my laptop expects to draw up to 230 watts whereas PD charging ...
A Friendly Fish's user avatar
  • 125
1 vote
3 answers
143 views

I am currently designing a circuit that involves modulating an IR LED at 1kHz as well as being able to adjust the power of the LED. My plan is to use a basic Op Amp + MOSFET + Rsense to create a ...
Luis Flavell's user avatar
  • 105
0 votes
0 answers
88 views

https://www.ti.com/lit/ds/symlink/ref200.pdf?ts=1756607091265 Active electrode box uses this chip but only 2 wire.. meaning the signal is sent via the power supply. The theory is this. The active ...
Jtl's user avatar
  • 1,093
1 vote
1 answer
88 views

I'm working on a boost converter design and am now on the third revision. The TPS43060 works fine in constant voltage mode. I added a constant current loop using the INA180A2 as a high-side current ...
Grunwalski Keinplan's user avatar
  • 13
10 votes
3 answers
612 views

I have designed a differential amplifier, which subtracts the voltages it senses on a ~5Ω 1A "load" and the output of that subtraction biases a ADC pin of an MCU. The "load" is a ...
Christianidis Vasileios's user avatar
  • 4,344
2 votes
2 answers
231 views

I'm currently designing an Improved howland pump circuit in order to achieve the constant current, and my Vin for the circuit is a wave ( sine, triangle, rectangle, sawtooth) from the ESP32 DAC. I ...
17 Trịnh Hữu Phúc's user avatar
  • 85
5 votes
4 answers
638 views

I'm working on a personal project and I cannot get a sawtooth generator to work, I'm trying to use a constant current source with bjt to charge a capacitor linearly and another bjt to discharge the ...
Pagliacci's user avatar
  • 53
4 votes
2 answers
242 views

my coworker and I and struggling to implement a current driven pneumatic pressure control valve. We have an IMI-Norgren "VP50 Series proportional pressure control valve" with 4-20 mA command,...
Austin Fox's user avatar
  • 177
1 vote
2 answers
189 views

I'm trying to make constant current with a sine pulse as an assignment from my project supervisor, the problem is I really can't imagine what a constant current that has a sine pulse at all, it just ...
17 Trịnh Hữu Phúc's user avatar
  • 85
7 votes
4 answers
374 views

I had a question given to me for a class assignment, I will describe it now. The question is of DC analysis, we are to find the output voltage of a common base configuration BJT (NPN). I analyse it as ...
Animesh Shukla's user avatar
  • 97
2 votes
2 answers
171 views

I’m working on a project where I need to amplify a modified sawtooth signal from 5 V peak to 15 V peak, driving a 1 kΩ load and controlling the current to reach a maximum value of 300 mA. The signal ...
Omer Alaa's user avatar
  • 21

15 30 50 per page
1
2 3 4 5
…
47