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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders. |
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21st Apr 2008, 1:25 pm | #1 |
Retired Dormant Member
Join Date: Apr 2008
Location: Hertfordshire, UK.
Posts: 96
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Levell R.C. Oscillator (Type TG200DMP)
I have a faulty Levell R.C Oscillator (Type TG200DMP), and would like
to get it working. Does anybody know were I can obtain a circuit diagram for this instrument. I have attached a picture of the oscillator. JR |
22nd Apr 2008, 11:47 am | #2 |
Heptode
Join Date: Apr 2003
Location: Ayr, Ayrshire, UK.
Posts: 631
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Re: Levell R.C. Oscillator (Type TG200DMP)
Hello John,
I have scanned the full manual for you - enjoy Andy
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24th Apr 2008, 10:47 am | #3 |
Nonode
Join Date: Mar 2008
Location: Virginia Water, Surrey, UK.
Posts: 2,879
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Re: Levell R.C. Oscillator (Type TG200DMP)
I just checked the manual I have for my my TG200DM, and it is a slightly earlier vintage, with a few small differences in the circuit diagram and components.
A scan is attached in case yours is this version. The clue may be the use of 1S44 diodes in p[lace of the later 1N4001/1N4148. However, it probably pre-dates your posh DMP version as it has no mention of fine frequency control. All the best Jezzer3 |
24th Apr 2008, 11:29 am | #4 |
Retired Dormant Member
Join Date: Apr 2008
Location: Hertfordshire, UK.
Posts: 96
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Re: Levell R.C. Oscillator (Type TG200DMP)
I bought it when I was a student a few year back, and I remember it cost
around £20 at the time, so hardly posh. It has served me well until recently when it stopped working. So this weekend I will have a play with it. I will print off the manual and circuits diagrams and see which circuit diagram is most suitable. I tried looking up Levell Electronics, which is a company I know little about and sadly they seem to have long since closed. JR |
24th Apr 2008, 6:21 pm | #5 |
Heptode
Join Date: Mar 2008
Location: Forest of Dean, Gloucestershire, UK.
Posts: 648
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Re: Levell R.C. Oscillator (Type TG200DMP)
John,
I've attached a PDF copy of the manual in case that's easier for you to deal with. Levell were still marketing stuff until comparatively recently but, as you say, seem to have vanished. Hugh |