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Old 3rd March 2003, 11:32 AM   #1
Gunders is offline Gunders  Norway
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Default Components for Kwak-Clock

I have just recieved the schematics for the Kwak-clock.
I would like to bulid this clock, but there's a problem.
The FET used is not available from my local retailer, do anyone have a recommendation for FET I can use instead?
Can I use a bipolar transistor instead of a FET without degrade the performance?

I'm currently ordering my parts from www.elfa.se

There's also a problem with the comparator, the comparators listed at the schematic are not available from Elfa Either, but I think I have found a comparator which could work as a replacement: MAX961.
Would this comparator be a good alternative for the comparators listed at the schematics?
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Old 3rd March 2003, 12:03 PM   #2
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Cool Parts substitutes

Hi Gunderz,
Please have a look here for all the parts I did try with less good results:
http://www.diyaudio.com/forums/showt...6141#post26141
and
http://www.diyaudio.com/forums/showt...1962#post11962

The circuit with the J309 and the AD8561 is proved and tested. With other components it might work but you are on unkwown territory.
A bipolar transistor was used in version 2 of my clock with less good results.
I doubt if the MAX961 is a good choice as it has internal hysteresis.
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Old 3rd March 2003, 02:51 PM   #3
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Default kwak-clocl

hi gunderz,
if u need the components.and cant find it...ex. ad8561 and J309..contact me
at tone_ne@hotmail.com..i can get this easily.

rgds,
tone
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Old 4th March 2003, 02:53 PM   #4
A'af is offline A'af  Indonesia
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Hi tone,

How much for 1 set (esp ad8561 and FET) need in Kwak Clock, if you can give a good price, perhaps need more than one set, have you in Malaysia (perhaps in Kuala Lumpur) have a good "retailer" for semiconductor like Texas Instrument, Analog Device, Linear Technology, Cirrus Logic, Motorrola and other company, like to hear someone want to help in Diy world.

Sincerely,
A'af
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Old 4th March 2003, 02:56 PM   #5
tiroth is offline tiroth  United States
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Gunderz, can you source LT1016?
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Old 4th March 2003, 03:33 PM   #6
ALW is offline ALW  United Kingdom
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I built one with a J310, and it worked well.
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Old 4th March 2003, 04:21 PM   #7
Cobra2 is offline Cobra2  Norway
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Default Clock parts

Why not ask Elso?
He can supply the parts, and PCB...

Arne K
NORWAY
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File Type: jpg k-c_img.jpg (87.4 KB, 1508 views)
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Old 4th March 2003, 06:01 PM   #8
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Default Kwak-clock

hi all,
i do believe elso kwak sell the kit also..if u are thinking of building it by urself, and cant find the parts..pls do contact me ..im glad to be able to help..contact me offline..

tone_ne@hotmail.com.

rgds,
tone
Kuala Lumpur,Malaysia.
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Old 4th March 2003, 07:35 PM   #9
Gunders is offline Gunders  Norway
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Quote:
Originally posted by tiroth
Gunderz, can you source LT1016?
yes, I can source LT1016.
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Old 6th March 2003, 04:22 PM   #10
tiroth is offline tiroth  United States
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LT1016 should be fine. AD8561 is actually an improved replacement for LT1016.
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