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 Forum index » DIY Hardware and Software » Jürgen Haible designs
Wavefolder B diodes
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Luka



Joined: Jun 29, 2007
Posts: 1002
Location: Melb.

PostPosted: Mon Dec 06, 2010 2:03 pm    Post subject: Wavefolder B diodes
Subject description: Re-Calculating to work with a different diode types
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Hi Jurgen

I would like to build a variant on your wavefolder with different types of diodes, like GE diodes. How do you alter the circuit to handle the different forward voltage drop of the diodes?

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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
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PostPosted: Thu Dec 09, 2010 7:45 am    Post subject: Re: Wavefolder B diodes
Subject description: Re-Calculating to work with a different diode types
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Luka wrote:
Hi Jurgen

I would like to build a variant on your wavefolder with different types of diodes, like GE diodes. How do you alter the circuit to handle the different forward voltage drop of the diodes?


There is no easy way to do this.
The way to do it would be:
Get a circuit simulator, like LTSpice.
Model the original circuit.
Get a component model for the new diode you want to use.
Change the circuit - resistors, mainly - until the circuit behaves like the previous one, but with the new diodes.
Caveat: not easy to get an accurate model for Germanium Diodes.
Caveat 2: Beware of leakage currents in Ge Diodes.
Caveat 3: If the end result matches the initial result - why then use different diodes?

JH.

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Luka



Joined: Jun 29, 2007
Posts: 1002
Location: Melb.

PostPosted: Fri Dec 17, 2010 4:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

thanks jurgen
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