Transformer output

[ocool_15]

I have a transformer I pulled out of some equipment that was used for moving a large salelite dish like the 10ft ones or whatever they used to be. I pulled it long ago so I dont have the equipment to go from. Its not a torrid its a usual(E?) type. was looking to use it with a gain clone or similar chip amp. I am not sure exactly what 4 of the wires are:
wire1 yellow
wire2 red
wire3 red
wire4 yellow
measured voltages are as follows(116-117 measured on primary)
wires vac out at no load
1-4 32.5Vac
1-3 23.9Vac
1-2 8.2Vac
2-4 23.8 Vac
2-3 15.0Vac
3-4 8.1Vac


It also has 3 wires which i assume is 2 blues center tapped with black as follows:
blue to black both 21.1 and 42.9v blue to blue

The primary was originally fused at 2A and the text on top is
SAM W00
PHN-IE1-08

It would be much appreciated If you could tell me what those 4 wires mean. I taped them together originally so im assuming that they went to the same area of the pcb.

[Stocker]

could be one 32V one 15V
could be 2x 24V but the colors would be odd
Could be all one bit of wire. Resistances across the leads to each other would possibly be instructive. Look for low to below single ohms per connection, open for not-connected.

[AndrewT]

Hi,
looks like you have 2 windings.
1. multi-tapped 30Vac with taps at 7.5V & 21V or taps of 9V and 22.5V
2. dual winding 2*20Vac.
I have reduced your measurements slightly to account for voltage drop under load.
Try to measure and/or compare the wire thickness on all the taps and windings to estimate which are high current and which are low. You could have different current ratings on each of the multi-tap winding.
Winding 2 can be used in series or parallel for more volts or more current.
A small transformer could have regulation as high as 20% and larger ones go as low as 3%
Your next stage is to gradually load up one winding at a time to find how much current you can draw for say a 5% voltage drop.
Next try to load all the windings at these new currents to find the voltage drop at max output. Total loss could now be about 10% or so. At this stage carefully check running temp to ensure you are not overheating the transformer. Be careful to not short any wires during this testing else you end up with metal scrap, and !!!!!DO NOT KILL YOURSELF!!!!!
regards Andrew T.

[ocool_15]

Sorry for my late reply but I tested all the impedences and all are connected together with impedences 1.1 ohm or below. all wires on the output are the same guage. ~20ga multi strand

1-2 .7 ohm
1-3 .8 ohms
1-4 1.1 ohm

2-3 .7 ohms
2-4 .9

3-4 .7 ohms

I was thinking i could still use the +-21.1Vac for a amp and use

1-4 of the unusual wires 32.5V for a preamp using 2 sets of capacitors in series to give the the split supply I would need. I havent tried loading down the secondaries yet as I'm in the middle of midterms of first year Engineering.