Not unless you buy from China.
Bought 50 cheap and did not expect great things.
They were for learning and testing purposes.
In testing, voltage was all over the place, 3.1 to 4.41. Two did not work at all, four have failed early with some heat applied. Lost some more doing things you should not do.
Have ended up with 12 close enough for various tests in A5,A30,A60 formats.
I would not buy them again but it has been a cheap way to try things without frying the good ones I have from Mouser.
Tony
two diode full rectifier
you can use Graetz Bridge , omitting negative contact
see here : Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans
you can use Graetz Bridge , omitting negative contact
see here : Most Greedy Boy, of them all... or (there is no) DEFiSIT of Papa's Koans
I have a center tapped 15v-0-15v, 200va. Does it work? My power supply PCB only support 4 cables which is dual primary input.
Does your transformer secondary (15-0-15) have 3 or 4 wires ?
If 4 wires then it’s 2 separate windings which would work great.
If 3 wires then simply use 2 wires to get 0-15 and connect to each channels.
With your 15-0-15, 200va you have more then 6A available, this is more then ok to power 2 channels simultaneously.
BR
Eric
If 4 wires then it’s 2 separate windings which would work great.
If 3 wires then simply use 2 wires to get 0-15 and connect to each channels.
With your 15-0-15, 200va you have more then 6A available, this is more then ok to power 2 channels simultaneously.
BR
Eric
Attachments
Only 3 wires.
Allow me to translate the specs.
It is a 200VA transformer. BOD200 is just the manufacturer model no.
Input: 220V/50Hz Red Red
Output: 15v-0-15v Blue Black Blue
The manufacturer quoted total output is 200VA. So 15v-0 single side is 100VA. 100/15v = 6.667A, rite?
Attachments
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Please refer to the picture I have attached. Yes, 2 x 15v with sharing the ground. Not sure how to wire it to the power supply which require 4 wires inpt (also shown in the pictures).
On board rectifiers? Do you mean the RBV5006?
Sorry I am totally electronics nerd.
I have tried using the laptop power supply and everything is working now. Q1 be able to set at 10v. The thing is I only got 1 laptop power supply which did not be able to power 2 channel. The crazy thing is the laptop psu here is about 3 dollar higher than the center tapped transformer. This is the reason I prefer to use a real transformer.
Based on your pcb pic: simply connect 1 blue and 1 black wire from your transformer output to the 2 x AC connectors located on top left. Put some electrical tape on the end of the unused blue wire. By doing so you will get a DC voltage of about 20V across the Gnd and V+ connections on the right side of your pcb. The ACA does not require a negative voltage to work. Just connect both channels to the Gnd and V+ this way you’ll be able to use your transformer.
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