Doepfer

> ----- Original Message ----- 
> From: Dieter Doepfer 
> To: Bakis Sirros 
> Sent: Monday, March 21, 2005 11:10 AM
> Subject: AW: voltage ranges
> 
> 
> 
>   -----Ursprungliche Nachricht-----
>   Von: Bakis Sirros 
>   Gesendet: Freitag, 18. Marz 2005 15:11
>   An: Dieter Doepfer
>   Betreff: Re: voltage ranges
> 
> 
>   hello dieter,
>   you mean that if i patch a +15volt signal into the
> a150/a151/a152 , the module will not work correctly
> (for example i remember that the old version
> a150/a151 let all triggers above +8volts to pass
> thru the switch all the time,and that means that for
> signals more than 8volts these modules are
> unusable). right?
>   but the module cannot be damaged if i patch into
> it a +/-15volts signal, right? 

> DIETER: No. There is some chance to damage modules
that
> contain VC switches (A-150/151/152 and the 8
> external CV/Audio inputs of the A-155) if a voltage
> beyond +/-12V is applied to the signal in/output. In
> general the A-100 is specified only for input
> voltages in the range -12V...+12V as most of the
> integrated circuits allow only voltages within the
> power supply ranges. Most inputs allow higher
> voltages as mentioned in my last email because the
> input signals are not connected directly to the
> integrated circuits but via attenuators or resistors
> (e.g. the inverting amplifier/adder on the DIY page
> that is used for most of the CV inputs) but not the
> signal in/outputs of CV switching devices. The
> signal in/outputs of CV switches are normally
> connected directly to the sockets (or only via an 1k
> resistor) an can be damaged with voltages beyond
> -12/+12V.
> 
> I think it would be a good ides to publish this
> information to the group. But as far as I know this
> is mentioned in the user's guides of A-150/151/152. 
> Best wishes
> Dieter Doepfer
> Doepfer Musikelektronik GmbH
> Email address: hardware@doepfer.de
> Web Site: www.doepfer.com
> 

Bakis Siros
Parallel Worlds / Polariton
Athens-Greece
[Doepfer_a100] group owner
http://www.shimarecords.co.uk
http://www.ward12.com


		
__________________________________ 
Do you Yahoo!? 
Yahoo! Small Business - Try our new resources site!
http://smallbusiness.yahoo.com/resources/