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1answer
42 views

24V failsafe switch that cuts power untill power is removed and reapplied

Does anyone know of a device that when current is applied it will stay on for a certain period of time then turn off until current is removed and reapplied? Basically I have a float switch that, ...
1
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1answer
142 views

12V LED strips in series with a 24V power supply?

I am purchasing 50x - 1Meter / 12V / 72 LED /Rigid SMD 5730 strips directly from china. I don't know the LED manufacturer, nor the resistor being used. (yes, this is a gamble) The strip is one that ...
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1answer
75 views

Can this dimmer really handle 144W?

I was looking for a dimmer to control an LED strip with following characteristics: 5 meters long 14,4W (max) per meter, so 72W in total 24V I found a dimmer on ebay that says it can handle 144W, ...
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1answer
69 views

24vAC to Multiple DC Supplies

I am trying to put together a power circuit which will take a 24vAC supply to the following DC supplies. +24vDC (700mA) - Powering DC relays and OpAmps. +5vDC (500mA) - Powering MCU, Ethernet etc. ...
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1answer
121 views

Driving a load with 1.8V input

I have a Gumstix expansion board and want to make it communicate with some 24V PLCs. I've read these topics for reference: 1.8V to 5V, still not comfortable with transistors Transistors: why are ...
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1answer
174 views

24 to 96V Boost Converter independent from the load

How can i build a boost DC/DC Converter that can boost from 24 to 96V without the output voltage depending on the load? Why? Because i need to charge a battery system that has already been designed ...
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2answers
779 views

Can I get 24V from ATX PSU using 12V and -12V cables?

ATX PSU's have one -12V cable, and a few 12V yellow ones. Could I power up a 24V device by connecting 12V to + on the device and -12V on -?
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1answer
347 views

Choosing Fuses or MCB in 24VDC vehicle circuit

I am currently designing a 24VDC circuit for a small vehicle. I personally prefer using MCB's since they are simple to reset and easy to detect faults in the system, although i do find it rather hard ...
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1answer
301 views

24v brushless DC Driver Pinout

I have some Brushless DC Motors with drivers and I need some help finding the pinout of the drivers. Please take a moment to view the pictures here, clicking on a picture will show its ...
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4answers
5k views

Simple design to switch 24v from PIC

If I were wanting to drive i.e. industrial relays which require 24v from a Microchip PIC what would I need to look at in terms of a general transistor circuit (and it's pitfalls when driving such a ...
0
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1answer
303 views

Can I recharge 12V batteries individually while why are attached in series? [duplicate]

Possible Duplicate: Charging two lead-acid batteries connected in series, separately (with two solar panels) I have 12V Solar Panels and 12V batteries. But my laptop needs 17V to recharge. ...
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votes
3answers
756 views

Data over power line in a car

I am trying to build a communications system for a car, for turning gadgets on or off. One idea was to parasite on power lines, but what kind of components and signaling could be used for this? I am ...
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vote
4answers
845 views

How to set a digital out to 24V Vcc

I want a curcuit with 3.3V and 24V supply. The micro will use the 3.3V supply, which needs to be able to set multiple industrial 24V digital outputs. My plan was a simple op amp, but as far as I know ...
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votes
3answers
12k views

24V 3A from ATX power supply?

I am looking for a cheap way to get +24V DC max 3A from computer power supply. I prefer easy soldering solution like DIP, and standard components that do not need to be purchased over internet. Any ...