[Ronja] Dual channel MOSFET

Karel Kulhavy clock at twibright.com
Fri Aug 31 08:03:29 BST 2007


On Thu, Aug 30, 2007 at 09:15:16PM +0530, Pramod yaduvanshi wrote:
> I have gone through the specs of BF961 and BF908 and found following
> discrepancies:-
> 
> Drain Source Voltage rating
>     BF961 : 20 V
>     BF908 : 10 V

My BF908 datasheet (Philips) says 12V.

> So to ensure that G1 input capacitance is low I feel P104 voltage should
> be atleast 12 Volts if you are using BF961 as compared to 6V for BF908 .

Are you implying that G1 input capacitance decreases with P104 voltage?
If yes, where do you have this from? I didn't find any graph in the datasheets
that would show this.

CL<
> 
> So the R106 for tuning in case of BF961 will also be much lower compared
> to BF908
> 
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