I take speakers apart, that's my thing. I'm fascinated that with a piece of paper, a copper coil, and a magnet you can reproduce any sound know to man. Electronics is not my area of expertise. I like to recycle. I try not to contribute to landfills.
What is the value of a transformer?
I've looked on Ebay. Some seem to go for silly money, others - not so much. I'm talking about audio grade stuff. 100Va +
What is the value of a transformer?
I've looked on Ebay. Some seem to go for silly money, others - not so much. I'm talking about audio grade stuff. 100Va +
More information required;
Primary voltage,
Secondary voltage,
Current required,
Type of transformer; Torroid, EI, C Core,
how many tappings etc etc etc
Primary voltage,
Secondary voltage,
Current required,
Type of transformer; Torroid, EI, C Core,
how many tappings etc etc etc
I have a few. Iron cores I think. 300VA from a Bose system. 150VA from a JVC. I live in the UK so they are invariably 240V on the primary. My rule is: if they weight more than a bag of sugar - I keep them.
My question was not to seek a specific value of each item, more to understand what to throw away.
Metal is always recyclable.
Transformers from mass-market equipment are custom units that will not have value elsewhere.
You may be able to sell used large (>300VA) standard-value transformers. These have dual primaries and secondaries. They can be used world-wide.
Ed
Transformers from mass-market equipment are custom units that will not have value elsewhere.
You may be able to sell used large (>300VA) standard-value transformers. These have dual primaries and secondaries. They can be used world-wide.
Ed
Why are you keeping ANY of them if you're not into electronics? As ballast weights, as I do?
Transformers are expensive. I've sold them on ebay. If you can figure out the particulars, you stand to get a better bite. There's got to be a method to measure the secondary current capability, given the "nameplate" rating, such as "240 VAC, 125W".
When you can list the power, the voltage and current, the working piece becomes more useful to someone than a paperweight, or for scrap copper / iron.
When you can list the power, the voltage and current, the working piece becomes more useful to someone than a paperweight, or for scrap copper / iron.
download Chapter5 of RDH4, it has all that you need to start...it is free.... http://ds.agavaceae.ru/books/RDH/CHAPTR05.PDF
I'm still confused.
From Bose.
"Bass module rectifies un-regulated power VSNUB from the secondary of the line power transformer. VSNUB is,
in turn, converted to the various other potentials required by the system. Nominally 26VDC, this voltage varies
with load and line levels, but is limited to 31.5V maximum(assuming line voltage of 140V AC)."
If the rectified output is 26V DC, is the transformer AC output: 18.5V?
From Bose.
"Bass module rectifies un-regulated power VSNUB from the secondary of the line power transformer. VSNUB is,
in turn, converted to the various other potentials required by the system. Nominally 26VDC, this voltage varies
with load and line levels, but is limited to 31.5V maximum(assuming line voltage of 140V AC)."
If the rectified output is 26V DC, is the transformer AC output: 18.5V?
Yes, the voltage conversion factor for unregulated full wave rectification with filter caps of AC to DC is approximately 1.4 or the square root of 2.
As for the value of a used transformer, I have recovered many from scrap electronics and most were difficult to sell as is.
If you have the time and patience, you can take them apart and sell the copper magnet wire to a scrap yard for around $3 / pound.