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Old 18th Jan 2022, 5:30 pm   #81
Philips210
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

My kit arrived today. Look forward to building it when time permits. Thanks Peter.

Regards,
Symon
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Old 18th Jan 2022, 5:55 pm   #82
Andrewausfa
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Thanks Peter, a nice package in the post today.

Regards - Andrew
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Old 18th Jan 2022, 6:23 pm   #83
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Thanks Pete
delighted to receive my unit today
Well worth the money
Trev
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Old 18th Jan 2022, 9:04 pm   #84
turretslug
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Mine turned up today, too- very pleased and impressed, a great project for the near future!

Thanks, Colin
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Old 18th Jan 2022, 9:27 pm   #85
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Hi Peter, mine's here too. Many thanks for such good work.
Jerry
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Old 19th Jan 2022, 7:40 am   #86
steve102
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?
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Old 19th Jan 2022, 8:03 am   #87
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Hi Peter, the kit arrived yesterday, it looks great!
Thank you.
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Old 19th Jan 2022, 10:07 am   #88
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Quote:
Originally Posted by steve102 View Post
I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?
Hi Steve, there's a schematic (v2) a couple of pages back called Kincad Wobbulator and Timebase which has all the components listed on it.

Andrew
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Old 19th Jan 2022, 12:42 pm   #89
steve102
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Quote:
Originally Posted by Andrewausfa View Post
Quote:
Originally Posted by steve102 View Post
I received my kit yesterday thanks. Is there a list of the additional components that I need to obtain?
Hi Steve, there's a schematic (v2) a couple of pages back called Kincad Wobbulator and Timebase which has all the components listed on it.

Andrew
Thanks Andrew, I'd missed that.
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Old 19th Jan 2022, 2:00 pm   #90
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Hi Peter
My kit arrived safely this morning. Excellent documentation included, and a superb quality PCB. Many thanks again for your generous and dedicated efforts on this project.
Mike
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Old 22nd Jan 2022, 4:45 pm   #91
cathoderay57
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Hi folks, I've assembled my kit. It worked first time. It's only run up on the bench and I've been testing it on the scope. Haven't tried to wobbulate anything yet. The outputs all seem to be doing what they are supposed to. Here's the frequency ranges I'm getting on the counter:
1. 342-644 KHz
2. 1.0-2.1 MHz
3. 2.9-6.1 MHz
4. 5.2-16.9 MHz
On Range 4 above about 10.4 MHz the frequency setting is unstable but I think this is because of the long wires to the range switch. Grabbing them together with my hand stabilises things so hopefully when I get it in the box I might be able to shorten them a bit and/or position them to avoid this problem.
Cheers, Jerry
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Old 22nd Jan 2022, 5:34 pm   #92
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Thanks for the update Jerry, glad it works!

I think you are right about the switch wires.

Peter
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Old 26th Jan 2022, 10:43 pm   #93
GeorgeChristofi
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

I would certainly be interested if a second batch comes into fruition. Sure, I have a commercial sweep generator but there is something inherently satisfying in using home builds.
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Old 27th Jan 2022, 9:27 am   #94
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

George,

it is for the same reason that I have asked for my name to be put down for a second batch if there should be one.

I don't need one as I have several other options, but there is something satisfying in home build.
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Old 27th Jan 2022, 12:54 pm   #95
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

There probably will be another batch, see post #76.

Peter
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Old 28th Jan 2022, 10:37 am   #96
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Hi Peter, just to let you know my kit arrived yesterday.

Thanks, Alan
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Old 31st Jan 2022, 10:09 pm   #97
Andrewausfa
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

I started building the wobbulator tonight and came across a small issue, R11, I can't see it on the circuit diagram! Could someone point out if it's just my eyes or is it missing and if so, what value?

Thanks - Andrew
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Old 31st Jan 2022, 10:31 pm   #98
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Andrew

R11 is 1 megohm, and is connected to the junction of C7 (270pF) and the Gate of Q2, to Ground. It is missing from the schematic but is on the pcb.

Mike
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Old 31st Jan 2022, 10:41 pm   #99
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

Super thanks very much! Sometimes you can't see for staring and doubt yourself

Andrew
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Old 1st Feb 2022, 1:15 pm   #100
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Default Re: Haigh Wobbulator is there sufficient interest for a PCB?

I thought I had posted the schematic with the missing resistor but obviously I didn't.

Final Schematic attached.

Sorry about that.

Peter
Attached Files
File Type: pdf Wobbulator Schematic V1 Final.pdf (130.1 KB, 49 views)
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