DIY stepped attenuator using C7D0423N rotary switch.

binspaul · 18th November 2010, 05:42 AM

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.

binspaul · 18th November 2010, 09:43 AM

Hi,

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

Best regards,
Bins.

binspaul · 22nd November 2010, 03:06 AM

Hello guys, come on, please suggest...

gazzagazza · 24th November 2010, 05:29 AM

You can buy a switch all ready to take the resistors from Goldpoint, no guesswork required...

Sent from my HTC Desire using Tapatalk

ivicai · 2nd December 2010, 08:00 AM

it would be good "idea" to take in account input impedance of the input stage of the amp

binspaul · 11th December 2010, 12:46 AM

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.

11th December 2010, 12:46 AM	#6
binspaul diyAudio Member Join Date: Feb 2009 Location: Cochin, Kerala, India	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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22nd November 2010, 03:06 AM	#3
binspaul diyAudio Member Join Date: Feb 2009 Location: Cochin, Kerala, India	Hello guys, come on, please suggest...

24th November 2010, 05:29 AM	#4
gazzagazza diyAudio Member Join Date: Jun 2004 Location: NZ	You can buy a switch all ready to take the resistors from Goldpoint, no guesswork required... Sent from my HTC Desire using Tapatalk

2nd December 2010, 08:00 AM	#5
ivicai diyAudio Member Join Date: Sep 2009 Location: belgrade	it would be good "idea" to take in account input impedance of the input stage of the amp