Questions tagged [dual-supply]
The dual-supply tag has no usage guidance.
59
questions
1
vote
2
answers
291
views
Designing dual tracking regulator low noise PSU
I want to design a power supply with the following constraints
Inputs 19 V - 0 - 19 V secondary & 9.5 V secondary - A transformer I have
ready for the project, primary 230V
. Output +15 & -...
- 11
3
votes
1
answer
2k
views
Op-amp dual supply methods
To power an op-amp with a dual supply (+Vcc and -Vcc) you can use two power supplies connected in series.
I would like to find an alternative and less expensive way to do this as (in my project) the ...
- 73
0
votes
2
answers
158
views
What is wrong with this dual supply op-amp cascade circuit?
At the input I have a rectangle signal, R1 and R2 are 1 kΩ and 220 kΩ on the first cascade and second cascade (amplification factor 220). At the output I have zero.
Need I something like this on the ...
0
votes
0
answers
53
views
How to use multiple supply options in the easiest way for STM32?
I designed a custom board with STM32, ADC, and RS422 transceivers.
The estimated current consumption of all the IC on the circuit is not more than 200 mA on 3.3 V.
in the operational mode, the board ...
- 443
4
votes
0
answers
74
views
Grounding issues when using multiple supplies
I have a few questions about how grounding on a PCB and to an enclosure should be done when using multiple supplies. I have read a number of similar questions/answers from multiple sources with the ...
- 141
0
votes
3
answers
432
views
Confusion with dual power supply negative output current ratings
To summarize, I came up with the question when looking for an alternative to an expensive dual supply. This deflection system requires a +/-15V power supply, but its own supply is super expensive. I ...
- 1,505
3
votes
4
answers
1k
views
Output signal distortion from op-amp
I am currently using a TLE2144, and the input signal of 600 kHz, 4.5 Vpp is generated from a function generator.
Using a voltage follower with TLE2144, I was able to get an output of 4.5 Vpp with an ...
- 195
1
vote
1
answer
123
views
How to draw power from one of two sources according to priority, with indication for used source?
If two 5V power sources exist, one being always on and the other not (such as an ATX powersupply's standby 5V and "on" 5V rails), how could I draw power only from the "on" rail ...
- 111
1
vote
2
answers
91
views
Circuit with dual batteries used in sequence
I have a circuit that is currently powered by two 18650s connected in parallel via a TP4056 USB charging and protection module. The circuit uses very low power and therefore it lasts for weeks if not ...
- 11
-1
votes
1
answer
161
views
Using 12V output as ground in 24V power supply to form +/-12V rails
I have a power supply which outputs both +12V and +24V, Here's a photo:
Can I use the +12V as ground in my circuit to have a -12V(from 0V)/+12V(from 24V) output?
The load on the -12V output will be ~...
- 1
0
votes
2
answers
154
views
Low current, +- 20V supply from 5V [closed]
For my application I need +20V and -20V, at a low current, 10mA but probably 1mA might be good enough - difficult to say until I try.
I start with 5V provided by a common USB power supply. I have read ...
- 125
1
vote
3
answers
1k
views
Switching between power sources part 2
So I'm trying to switch between two power sources, a 24 V battery and a 24 V power supply, I'd love to use the circuit mentioned in a another thread. Switching between two power sources
I am having ...
- 13
3
votes
2
answers
2k
views
How to Wire Potentiometer Wiper
It appears as though the wipers are unwired in this schematic. Are only the far left and far right pins wired in this circuit?
- 45
0
votes
0
answers
111
views
Changing dual supply to single supply for the following circuit
The following circuit has a +-15V supply. What will be the circuit modifications (only in the final stage the driver and the power amplifier) if I want to use a single voltage source with a ground ...
- 71
1
vote
3
answers
69
views
How to get sufficient current out of two parallel DC/DC power supplies?
I have two RT8299AZSP (24V adjustable DC/DC switching regulators) chips connected in parallel. They are each rated for 3A, and provide the power to drive a high power UV LED (can't say too much about ...
- 985