Author Topic: Kikusui cos5040 scope  (Read 6887 times)

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Offline stj

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Re: Kikusui cos5040 scope
« Reply #25 on: June 18, 2017, 01:40:40 pm »
if you have a component tester then you can make one.
it's just a bunch of matched transistors.
 
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Offline welpester

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Re: Kikusui cos5040 scope
« Reply #26 on: June 18, 2017, 01:58:22 pm »
if you have a component tester then you can make one.
it's just a bunch of matched transistors.

Don't mind to try to find matching pair... Ordered 2 pcs of ca3086 chips. Should arrive on next week.

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Offline welpester

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Re: Kikusui cos5040 scope
« Reply #27 on: June 30, 2017, 08:46:04 pm »
Hi

I changed u202 chip and now it works. Thanks for helping me  :-+

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Offline tautech

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Re: Kikusui cos5040 scope
« Reply #28 on: June 30, 2017, 08:52:31 pm »
Hi

I changed u202 chip and now it works. Thanks for helping me  :-+

-welpester
Cool, well done.  :)
The old follow the signal path trick.  ;)

For completeness post a pic of the unit showing some waveforms.
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Offline welpester

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Re: Kikusui cos5040 scope
« Reply #29 on: June 30, 2017, 08:54:56 pm »
Hi

I changed u202 chip and now it works. Thanks for helping me  :-+

-welpester
Cool, well done.  :)
The old follow the signal path trick.  ;)

For completeness post a pic of the unit showing some waveforms.

I take few pics tomorrow and post here.  :=\

-welpester
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Offline welpester

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Re: Kikusui cos5040 scope
« Reply #30 on: July 01, 2017, 09:01:29 am »
Photo 1

Two phase sifted sine waves
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Offline welpester

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Re: Kikusui cos5040 scope
« Reply #31 on: July 01, 2017, 09:09:29 am »
Photo 2
Am modulated sine wave
« Last Edit: July 01, 2017, 09:13:11 am by welpester »
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Offline Electro Detective

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Re: Kikusui cos5040 scope
« Reply #32 on: July 02, 2017, 02:11:19 am »
Great news welpester !   :clap:

..good guys win again    :-+
 
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