All Questions
32
questions
0
votes
0
answers
82
views
Need more positive than negative current
My power supply collapses due to uneven positive and negative current draws.
I need about 2A of +12VDC, 1A of +9VDC, and 0.5-1A of -12VDC in a design I’m working on. I’d like to avoid using multiple ...
-1
votes
4
answers
70
views
Need Outdoor Application Power Transistors [closed]
I am looking for preferably readily available power transistor technologies that are adequate for high humidity and extreme environmental temperature fluctuation. This is because they will be in a ...
- 1
0
votes
4
answers
3k
views
Relay gets extremely hot
I have to programmatically switch a 50 W load (20 V, 2.5 A) and I'm using a Bosch DC relay to do it (exact part is pictured; see page 6 of the datasheet).
When I apply 12 VDC the relay clicks, so ...
- 275
4
votes
4
answers
4k
views
How to convert leds from AA batteries to a DC source
I have 2 strings of 100 white LEDs each that are powered by a battery pack of 3 AA batteries for each string. What I would like to do is use one of my low voltage power supplies that are typically ...
- 41
1
vote
1
answer
60
views
plug light in without spark? [closed]
I have spotlights which go on 12V/24V distributor but every time I plug one in there is a spark, they still do work fine but it's a bit scary and just annoying when all the other ones flicker every ...
- 31
-1
votes
1
answer
207
views
Use household power strip for 12V/24V power
I have a 12V/24V dimmer (rated 60W) and need to hook up 8 different lights, can I just use a regular power strip to distribute the 12V/24V? the power strip of course says 230V on it, but does it ...
- 31
0
votes
1
answer
765
views
Is this a standard power connector? (from Victron Energy 12V battery charger)
I am trying to find out whether I can buy this connector. I've browsed Victron Energy's manuals/specs and can find no mention of the connector name.
Spec sheet PDF
Note that one of the corners of the ...
- 101
0
votes
0
answers
65
views
Power supply needs BASED on usage plus 35%
I'm DIY'ing a RV van. What is the best power supply setup for a 8kW maxed out load plus 30%? I realize that this is a lot of power. I am trying to keep it self-contained and self-powered.
Current ...
-1
votes
1
answer
211
views
Mux gets damaged the moment power is on. How do I know that cause of this? [closed]
I am currently using a mux, ADG1419, and i have had frequent mux failure the moment I turn on power; the power and the GND of the mux shorts after the mux gets damaged. My only assumption is that the ...
- 195
0
votes
1
answer
429
views
Length of wire to calculate its power losses
Let us say I have 12V DC battery and I am using 10m long wire to connect my load with it. Now if I want to calculate power losses in the wire then should I use wire length as 10m or 20m (since there ...
- 139
0
votes
1
answer
122
views
Using a 50mA switch on a 2 amp load
Let me preface by saying I'm a total noob at all of this and just learning as I go via the internet.
I'm working on a home project where I need to trigger a submersible pump. I needed the switch for ...
5
votes
2
answers
1k
views
Why is 12V Common for PSU
Looking around at various PSUs and I see 12VDC show up pretty commonly, both for PSUs and motors they drive. Can anyone tell me some of the history and/or rationale behind this? E.g. is that a ...
- 153
1
vote
2
answers
2k
views
How to amplify a 0-5V PWM Signal to 0-12V, 10A
I need a Power amplifier which amplifies a 0-5V Arduino-generated PWM Signal to a 0-12V Signal with 120W, for powering a ZVS induction heater.
Linearity is not important because i can correct the ...
- 11
0
votes
3
answers
698
views
powerbank 12v to kinect sensor v2
I have very little knowledge about power draw / conversions etc. I would like to power a Kinect v2 Sensor from a USB Power bank. I saw the USB C and QC3.0 on this powerbank has between 9 and 12V ...
- 1
0
votes
2
answers
59
views
Case Fans in DC
I need to run about 15 12V case fans(80mm) from wall power. How do I do that? How much amperage do I need? Which voltage adaptor do I buy? I have searched this site and many other sites such as this ...
- 1