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DIY stepped attenuator using C7D0423N rotary switch.
DIY stepped attenuator using C7D0423N rotary switch.
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Old 18th November 2010, 05:42 AM   #1
binspaul is offline binspaul  India
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DIY stepped attenuator using C7D0423N rotary switch.
Post DIY stepped attenuator using C7D0423N rotary switch.

Hi,

I am planning to design a stepped attenuator based on the C7D0423N rotary switch available from Electro Switch. It is a 4 deck switch having 23 positions. I am not sure on the method to identify the terminals and the method to connect the resistors. Can someone suggest me a method I should follow.

I am attaching the C7D0423N manual along with the resistor tables for reference.

Thanks in advance,
Bins.
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File Type: png Resistor Table.PNG (17.4 KB, 400 views)
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File Type: pdf C7D0423N.pdf (76.3 KB, 110 views)
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Old 18th November 2010, 09:43 AM   #2
binspaul is offline binspaul  India
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DIY stepped attenuator using C7D0423N rotary switch.
Hi,

Few more details... The attenuator will be of ladder type. All the resistors are Dale RN60D.

Best regards,
Bins.
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Old 22nd November 2010, 03:06 AM   #3
binspaul is offline binspaul  India
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DIY stepped attenuator using C7D0423N rotary switch.
Hello guys, come on, please suggest...
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Old 24th November 2010, 05:29 AM   #4
gazzagazza is offline gazzagazza  New Zealand
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You can buy a switch all ready to take the resistors from Goldpoint, no guesswork required...



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Old 2nd December 2010, 08:00 AM   #5
ivicai is offline ivicai  Serbia
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it would be good "idea" to take in account input impedance of the input stage of the amp
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Old 11th December 2010, 12:46 AM   #6
binspaul is offline binspaul  India
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DIY stepped attenuator using C7D0423N rotary switch.
Exclamation Bump up...

Hello,

Guys, My only problem is in identifying the terminal with the rotary switch I am having. All the resistors are ready to go...

Does anyone have tried a similar one?

Best regards,
Bins.
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