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?
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?
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/showthread.php?postid=26141#post26141
and
http://www.diyaudio.com/forums/showthread.php?postid=11962#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.😎 😎
Hi Gunderz,
Please have a look here for all the parts I did try with less good results:
http://www.diyaudio.com/forums/showthread.php?postid=26141#post26141
and
http://www.diyaudio.com/forums/showthread.php?postid=11962#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.😎 😎
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
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
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
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
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.
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.
Well, I think I have found a solution.
Farnell does provide both the J309 and AD8561, but the problem here is that here in Norway Farnell only sell to companies, public institutions etc, and not to private persons.
but fortunately I can order the parts through the school.
Farnell does provide both the J309 and AD8561, but the problem here is that here in Norway Farnell only sell to companies, public institutions etc, and not to private persons.
but fortunately I can order the parts through the school.
Elso,
Do you have a kit available, if so would you e-mail a price for the kit and shipping to the US.
Thanks
Do you have a kit available, if so would you e-mail a price for the kit and shipping to the US.
Thanks
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