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BWD 112 Sine and Square Wave Generator
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Topic: BWD 112 Sine and Square Wave Generator (Read 3695 times)
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GK
Super Contributor
Posts: 2607
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BWD 112 Sine and Square Wave Generator
«
on:
June 18, 2016, 08:25:00 am »
Was recently gifted this. I managed to find the manual for the 112
B
model variant, which is fully transistorised, but I couldn't find any data (manual/schematic) or photos for this model on the internet at all, so here is the first internet reference. I spent a few hours this afternoon tracing the circuit out.
BWD was an Australian manufacturer. Not a lot of their stuff had tubes inside. This must have been amongst the first of their products. Anyway, it's a bog standard Wien Bridge sine oscillator with light bulb stabilisation. It's all tube apart from a Si transistor Schmitt trigger circuit which produces the squarewave output.
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tautech
Super Contributor
Posts: 29028
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Taupaki Technologies Ltd. Siglent Distributor NZ.
Re: BWD 112 Sine and Square Wave Generator
«
Reply #1 on:
June 18, 2016, 11:30:18 am »
Drop Kevin a line, he's been very helpful when I've needed stuff.
http://www.kevinchant.com/bwd.html
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GK
Super Contributor
Posts: 2607
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Re: BWD 112 Sine and Square Wave Generator
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Reply #2 on:
June 19, 2016, 10:34:42 am »
I'm sure if Kevin had a manual for the 112 it would be up on his site. I've nutted out the circuit anyway, so that has my needs sorted. This thing isn't exactly high-level technology. Thought this might elicit an admission of nostalgia or two. This generators first and previous home was Regency Park TAFE (SA). I recall one lab from the period I was there with a few of these all dusty like and unused stashed on a shelf in a corner. By then none of the test equipment on the benches had tubes inside, though old stuff could still be found sitting in cupboards; obviously some sitting for decades before finally being put out for disposal.
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Last Edit: June 19, 2016, 10:37:57 am by GK
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radhaz
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Re: BWD 112 Sine and Square Wave Generator
«
Reply #3 on:
June 19, 2016, 10:43:13 pm »
Sure is a handsome beast.
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