Components for Kwak-Clock

Gunders · 3rd March 2003, 11:32 AM

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?

Elso Kwak · 3rd March 2003, 12:03 PM

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.

tone · 3rd March 2003, 02:51 PM

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

A'af · 4th March 2003, 02:53 PM

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

tiroth · 4th March 2003, 02:56 PM

Gunderz, can you source LT1016?

ALW · 4th March 2003, 03:33 PM

I built one with a J310, and it worked well.

Cobra2 · 4th March 2003, 04:21 PM

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

Arne K
NORWAY

tone · 4th March 2003, 06:01 PM

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.

Gunders · 4th March 2003, 07:35 PM

Quote:

Originally posted by tiroth
Gunderz, can you source LT1016?

yes, I can source LT1016.

tiroth · 6th March 2003, 04:22 PM

LT1016 should be fine. AD8561 is actually an improved replacement for LT1016.

3rd March 2003, 11:32 AM	#1
Gunders diyAudio Member Join Date: Nov 2002 Location: Norway	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?

3rd March 2003, 12:03 PM	#2
Elso Kwak Banned Join Date: Dec 2001 Location: Zamboanga, City of Flowers, Mindanao	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.

3rd March 2003, 02:51 PM	#3
tone diyAudio Member Join Date: Aug 2002 Location: Malaysia	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

4th March 2003, 03:33 PM	#6
ALW diyAudio Member Join Date: Jun 2001 Location: UK	Alternatives I built one with a J310, and it worked well.

4th March 2003, 06:01 PM	#8
tone diyAudio Member Join Date: Aug 2002 Location: Malaysia	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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4th March 2003, 02:53 PM	#4
A'af diyAudio Member Join Date: Nov 2001 Location: Indonesia, Jakarta	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

4th March 2003, 02:56 PM	#5
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	Gunderz, can you source LT1016?

6th March 2003, 04:22 PM	#10
tiroth diyAudio Member Join Date: Dec 2001 Location: Pittsburgh, PA, USA	LT1016 should be fine. AD8561 is actually an improved replacement for LT1016.

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