Question about Audio Players & Recorders

# Need voltage transformer for crosley mod. cr704c

Need to know secondary output

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Transformers are safety parts so you need to get only the one authorised by Crosley, so you need to contact them for a supplier of the part.

Posted on Jan 16, 2013

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
goodluck!

Posted on Jan 02, 2017

You have to do the math according to the circuit path, and all components in between. Break out the voltage meter.

Posted on Oct 28, 2007

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http://waterheatertimer.org/Malibu-power-pack-stopped-working.html

I don't think they post schematic for the transformer
But generally, the primary coil receives 120Volt AC input from household electrical outlet
And the secondary coil produces 12Volt AC output for the low voltage lights.
The 'coil' is a coil of insulated wire wrapped around a metal core. Two coils set side by side create a transformer... when primary is energized, the secondary responds to the magnetic field caused by primary core... resulting in a current that flows on the secondary coil.
Output voltage on secondary coil is determined by the number of wraps and diameter of wire.

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### Crosley CR24 transformer rating

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You can contact them here:

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### How to identify the matching transformer terminal by means of terminal resistance? and which terminals is for input or output?

Doing a resistance test on a transformer will not give the information you require as you will read very little, if any resistance. What you need to do is an impedance check and that gets involved. If it is a normally wound transformer, not an auto transformer, you can isolate which is the primary and the secondary windings. Unless the transformer is a multi voltage input unit, the primary side will have continuity through only two terminals. The secondary could be more than two if it is a multi output voltage one. If the transformer is a step down, the primary windings will be the thinner wired windings and vice-versa. To actually test the transformer, get hold of a transformer with about a 20 vac output and try it across the two terminals you have identified as the primary windings, you should ge a proportional voltage of the actual output. eg. with 20 vac input and a 2 vac reading at the secondary, the actual output would be 11 vac if your mains voltage is 110 volts. Take care that you are using the transformer at the voltage it is designed for, otherwise it will overheat and burn out.

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The secondary voltages of a transformer are stepped down voltages. For example a transformer might be stepping 120 volts AC down to 25 volts AC in the secondary. Which then would be rectified by a bridge rectifier in the power supply and converted to DC Voltage which would be used to bias transistors or tubes and other electronic components. The amount of voltage that is output for use is determined and calculated by the engineers designing the amplifier or pre-amp.

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### Crosley CR83 transformer needed

Hi Meggie58,

There are a few ways to repair the damage....

1/ Obtain a genuine replacement transformer from the Crosley
company in the USA. 120volts and you must then use a
step down transformer for the Australian power supply.
2/ Obtain a locally manufactured transformer that has a 230v
Primary but the secondary is matched to the Crosley power
requirements.
3/ Advertise in the "Wanted to buy" section of E-bay or any
other USA Internet trading post to obtain another CR-83
complete...
Internet trading post to obtain another CR-83 complete....
(You just might get lucky)
Ensure the mains transformer is OK...
4/ Watch the internet trading post sites for another CR-83
complete and working "for sale" Buy that one then use your
existing one for spare parts in the future..(Excluding the
transformer of course).

Hope this Helps you... YUBEUT

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