Racal Dana 9232 Dual PSU aka Thurlby PL320 Dual PSU - UK Vintage Radio Repair and Restoration Discussion Forum

Hermit6345 · 22nd Oct 2006, 9:07 pm

Hi,
Anyone got a circuit diagram for a Racal-Dana 9232 Dual PSU. It's 0-30 volts twice at about 2 amps/unit with a slim unit in the middle that allows series or parallel conection of the PSUs. I'm pretty sure it's based on a Farnell unit but can't be sure. Don't seem to be able to find anything on the web.

Ian.

hysteresis · 1st Feb 2007, 10:15 pm

I have a service manual for the Thurlby PL320 Dual PSU, which appears to be identical to the Racal-Dana 9232.

The manual includes circuit descriptions, diagrams and calibration procedures. I can email a copy of it, if that's of any help.

John

dinplug · 27th Mar 2007, 9:33 am

Hi Guys,

I noticed your thread and wondered if you knew of any stock faults on the Thurlby PL320 power supply.

The one I have is an early model with the brown coloured casing.

The current limiter is collapsing the volts when any load is applied for example 12 volts at 100ma.

I have already checked the user control current limiter pot as this is ok.

The voltage swing is from zero to 30 volts at up to 2 amps if not mistaken.

Would there be any chance of a look at the circuit diagram to try and fix the problem with the current limiter.

Or any tips welcome

Thanks

Steve

dinplug · 30th Apr 2007, 9:54 pm

Hello again,

finally sussed the fault on the thurlby PL320 power supply

It took some finding but it turned out to be P3 which is a preset on the control board and is part of the current limiter circuit.

It had gone high from 1k to well over a megohm.

Replacement cured the fault.

Dinplug

hysteresis · 4th Apr 2008, 11:05 am

Various Sinclair/Thandar/Thurlby manuals can be found here:
http://k1.dyndns.org/Vintage/Sinclai...cs%20Products/

ludvika · 7th Sep 2008, 10:12 pm

Hi everybody. Can sombody help me out please. Is anybody got this circuit diagram : Racal Dana 9232

? If you have than please send me an mail please. Thank You. Ludvika

CanonMan · 7th Sep 2008, 10:38 pm

Quote:

Originally Posted by ludvika

Hi everybody. Can sombody help me out please. Is anybody got this circuit diagram : Racal Dana 9232

? If you have than please send me an mail please. Thank You. Ludvika

Try this:

http://k1.dyndns.org/Vintage/Sinclai...R%20SUPPLY.pdf

22nd Oct 2006, 9:07 pm	#1
Hermit6345 Rest in Peace Join Date: Oct 2006 Location: North Wiltshire, UK. Posts: 638	Racal Dana 9232 Dual PSU aka Thurlby PL320 Dual PSU Hi, Anyone got a circuit diagram for a Racal-Dana 9232 Dual PSU. It's 0-30 volts twice at about 2 amps/unit with a slim unit in the middle that allows series or parallel conection of the PSUs. I'm pretty sure it's based on a Farnell unit but can't be sure. Don't seem to be able to find anything on the web. Ian. Last edited by Hermit6345; 22nd Oct 2006 at 9:12 pm. Reason: Added name

1st Feb 2007, 10:15 pm	#2
hysteresis Tetrode Join Date: Feb 2007 Location: Liverpool, Merseyside, UK. Posts: 99	Re: Racal Dana 9232 Dual PSU I have a service manual for the Thurlby PL320 Dual PSU, which appears to be identical to the Racal-Dana 9232. The manual includes circuit descriptions, diagrams and calibration procedures. I can email a copy of it, if that's of any help. John

27th Mar 2007, 9:33 am	#3
dinplug Triode Join Date: Dec 2004 Location: Stoke on Trent, Staffordshire, UK. Posts: 17	Thurlby PL320 single power supply Hi Guys, I noticed your thread and wondered if you knew of any stock faults on the Thurlby PL320 power supply. The one I have is an early model with the brown coloured casing. The current limiter is collapsing the volts when any load is applied for example 12 volts at 100ma. I have already checked the user control current limiter pot as this is ok. The voltage swing is from zero to 30 volts at up to 2 amps if not mistaken. Would there be any chance of a look at the circuit diagram to try and fix the problem with the current limiter. Or any tips welcome Thanks Steve Last edited by Station X; 27th Mar 2007 at 3:21 pm. Reason: Merging of two almost identical posts.

30th Apr 2007, 9:54 pm	#4
dinplug Triode Join Date: Dec 2004 Location: Stoke on Trent, Staffordshire, UK. Posts: 17	Re: Racal Dana 9232 Dual PSU Hello again, finally sussed the fault on the thurlby PL320 power supply It took some finding but it turned out to be P3 which is a preset on the control board and is part of the current limiter circuit. It had gone high from 1k to well over a megohm. Replacement cured the fault. Dinplug

4th Apr 2008, 11:05 am	#5
hysteresis Tetrode Join Date: Feb 2007 Location: Liverpool, Merseyside, UK. Posts: 99	Re: Racal Dana 9232 Dual PSU aka Thurlby PL320 Dual PSU Various Sinclair/Thandar/Thurlby manuals can be found here: http://k1.dyndns.org/Vintage/Sinclai...cs%20Products/

7th Sep 2008, 10:12 pm	#6
ludvika Retired Dormant Member Join Date: Sep 2008 Location: Derby Posts: 1	Re: Racal Dana 9232 Dual PSU aka Thurlby PL320 Dual PSU Hi everybody. Can sombody help me out please. Is anybody got this circuit diagram : Racal Dana 9232 ? If you have than please send me an mail please. Thank You. Ludvika