Farnell Power Supply Unit E30/1 Refurb - #099

Farnell Power Supply Unit E30/1 Refurb - #099

Obtained from EBay for £15, this 1970’s PSU was made in Yorkshire!

I have been unable to find a circuit diagram for my model, sold on EBay as ‘Farnell E30/1 Benchtop Stabilised Power Supply’

The only circuit I can find (E30/2) has two 2N3055’s as the main power regulation transistors, where as my unit only contains one.

A good selection of test gear and tools here:
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Use coupon code LE10 and help support the channel!

Lab equipment
Oscilloscope (Analog) – Hameg HM 307
https://youtu.be/TCYLMDqf8c4
Oscilloscope (Digital) – Siglent SDS 1104X-E
https://www.telonic.co.uk/SIGLENT-SDS1104X-E-Super-Phosphor-Oscilloscope-p/sds1104x-e.htm
Function Generator – Siglent SDG 1032X
https://www.telonic.co.uk/SIGLENT-SDG1032X-Function-Generator-p/sdg1032x.htm
Signal Generator – Rapid Electronics 85-1200
https://youtu.be/SuyP9ZOJ0PM
Spectrum Analyser – Siglent SSA 3021X Plus
https://www.telonic.co.uk/SIGLENT-SSA3021X-PLUS-Spectrum-Analyser-p/ssa3021x-plus.htm
Bench Multimeter – East Tester ET3240
http://www.easttester.com/a/Product_introduction/Precise_Digit_Multimeter/2018/0611/123.html
LCR Meter – RuoShui 4090C
http://victorruoshui.com/productinfo/105228.html