All Questions
15
questions
2
votes
4
answers
1k
views
DC voltage drop due to loads
I often do LVDC designs where I power multiple loads in parallel from a single voltage source. I use a single pair cable and connect each load to this in parallel. Each load is separated by some ...
- 315
0
votes
2
answers
69
views
What is the load on this DC HV bias supply?
Most proportional HV supplies' outputs are load dependent. Given the circuit below, what is the load on the bias supply? Which components contribute to the load the most? The "detector" is ...
- 1,137
0
votes
0
answers
92
views
DC on-load switch (with overload and short circuit protection)
I have an application where I shall switch a DC load ON and OFF (with DC input), but have also to provide overload and short circuit protection. Switching voltage is 400VDC and the load is 2KW.
I need ...
-2
votes
4
answers
321
views
How to find max load limit in datasheet?
I have а datasheet but I don't understand: how to find max load limit in datasheet?
Can I use this SSR to switch the load (12V DC), and what current can I count on?
Thanks.
- 109
-1
votes
1
answer
170
views
stall dc motor 12 volt for long time
hi every one i make water cooling system for dc motor 12 volt
how can i make the dc motor hot to test the system ?
whan i stall the dc motor the wires get very hot before that effect the motor
and i ...
0
votes
1
answer
9k
views
What is a load current?
I was trying to calculate the voltage drop of a copper wire due to its length,
given that it has a fixed size and it transmits DC current.
Anyway when trying to calculate it with one of this online-...
3
votes
2
answers
2k
views
How to determine the load requirement for a 24 VDC power supply
I work in the automotive industry. I got a project to add extra hardware to a particular line. The current hardware requires 24 V, 70 W.
We have a power supply unit "Power One HE-24V-7.2A" ...
- 31
1
vote
2
answers
2k
views
How to correctly calculate load on a DC motor
What bothers me is the meaning of no load current (free current) which is the source of my problem.
I want my circuit's MCU to warn me if a motor exceeds 30% load. But how to calculate load?
There is ...
- 13
4
votes
2
answers
4k
views
Using an AC relay for DC switching, safe limits
I have an relay that's rated for a 250VAC, 16A load.
Would it be possible to also use the same relay for say a 25VDC, and less than 1A load?
From here,
relay power ratings - AC vs DC
,
it seems to ...
- 713
1
vote
2
answers
1k
views
Simulating a DC motor with a constant friction torque
I'm trying to simulate a DC motor with simulink. The problem is that I don't know how to take a load torque into account. If the DC motor drives a wheel with constant velocity, there will be a ...
- 11
0
votes
1
answer
209
views
Is it necessary to limit a battery's current output?
Is it necessary to limit a battery's current output, or will the load inherently draw no more than is needed?
I have a 4S LiPo I want to connect as directly-as-possible to a DC fan of the appropriate ...
0
votes
1
answer
785
views
If a load is placed onto a DC motor, will the current increase? [duplicate]
When a load, such as a weight on string, is placed into a motors axle, will this cause the current to increase?
- 25
2
votes
1
answer
2k
views
Determine the maximum load of a power supply
I am trying to upcycle an old bit of tech I had lying about. The main part I am looking to recycle is the power supply however I do not have specs of the power supply itself. I have measured an output ...
- 123
0
votes
1
answer
99
views
Frequency and magnitude of power variations in a DC circuit.
I have a 5 V 5 A power source which is connected to a simple development board with a processor that draw current dependent on utilization. I use a multimeter that measure 1000 samples / s to measure ...
- 101
1
vote
2
answers
3k
views
How to switch both AC and DC voltage to a load
I have a load, an electrode basically acting as a very tiny capacitance, that I want to supply a voltage or bring to ground. The voltage can be either DC, up to about mains voltage, or AC into low KHz ...
- 11