Tagged Questions
-2
votes
3answers
84 views
Converting voltage to amperage [closed]
I was wondering if power transformers can be used to convert a high-volt/low-amp AC to low-volt/high-amp AC.
For example:
AC power input (E±=100 I=1) to a transformer primary (100 windings) and ...
0
votes
1answer
67 views
Getting the right converter for this 110/120v device, where the power is 220/240v
I have an appliance designed for 110/120v. It says it runs peak at 1200 watts, but I can't find yet any mention of Amps. I'll be using it in Europe at 220/240v, if it is possible.
I understand I can ...
-2
votes
1answer
120 views
At very high frequency (700 kHz), an AC circuit has a voltage reading 10 times the EMF, why is this?
I've set up an experiment in which I vary the frequency of an electric signal using a waveform generator. The experiment is testing a transformer, but I've encountered a problem on the primary circuit ...
1
vote
0answers
162 views
Flyback transformer driven compact fluorescent circuit [closed]
I seem to have run into trouble trying to run a flyback transformer with a CFL circuit.
I connected the high voltage pins of the CFL to the flyback transformers primary input and the other two pins ...
1
vote
1answer
116 views
Can I use more diodes to reduce the voltage off a diode bridge?
I have a transformer labeled as providing 9Vac, 3.36 A. It appears to provide 9.4 v ac according to my multimeter.
It runs through a diode bridge (WAB 040 diodes -- already fried the last version), ...
2
votes
2answers
88 views
Maximum effective range of RG-6/U in CCTV
How long RG-6u i can use in my cctv? what's is the effective range using RG-6u?
6
votes
1answer
396 views
Center tap split supply question
Lest's say that I have the following setup:
a split supply (using two voltage regulators: a positive and a negative one) connected to a center tapped transformer (12-0-12). The output of the ...
0
votes
1answer
310 views
Multi-tap transformer current handling capability
I have a transformer with a single secondary winding but with multiple taps, as shown in the image.
It is rated at 4A @ 24V (96VA).
Does this mean that at lower voltages (16V and 8V) it will be able ...
4
votes
2answers
239 views
op-amp circuit to transform input signal
In this typical op amp circuit, how would I go about calculating the value of each component if I want to simply transform the input voltage range into another voltage range, e.g. when input voltage ...
-1
votes
1answer
96 views
Prepackaged solutions for voltage step-down [closed]
I want to buy this eventually;
http://www.vellemanusa.com/products/view/?id=524708
Howver, it's rated for 10V max. Is there a more or less prepackaged solution for voltage stepdown? I can build ...
1
vote
1answer
240 views
How to search for a step-up transformer: 10V -> 90V
I'm working on something where I need to take ~10VAC @ 60hz and step it up to around 90VAC @ 60hz. Ideally a small step-up transformer should be fine, but I'm having trouble identifying the part I ...
3
votes
2answers
4k views
How to reduce voltage without using Transformer?
Is there any way to reduce voltage without using transformer? I have a supply of 24 volts AC @ 1500mA (1.5A) and I want to convert it into 6 volts @ 500mA. Because I have to supply the 6 volts to the ...
0
votes
2answers
624 views
When converting 120vac to 12vdc, does the wattage & amperage change?
I'm trying to calculate how long my UPS will power my cable modem and router.
I know that together the two draw 2.25 amps at 12 volts (27 watts), but this is on the DC side of the power brick. Does ...
2
votes
3answers
758 views
Does using 220V-110V transformer matter?
An electronic device manufacturer, said that using it with transformer is not recommended.
I don't understand why is that. There are products that work with both voltages, and I don't understand how ...
