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Re: 4420 driver ICs
Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz>
On 1 Apr 2004, at 8:26, Tesla list wrote:
> Original poster: Fucian-at-aol-dot-com
> In a message dated 3/31/2004 11:31:14 PM Eastern Standard Time,
> tesla-at-pupman-dot-com writes:
> >Question: are the inputs essentially FET gates? They may hold a
> >charge which could turn them on the moment the supply rails are
> >powered-up if the inputs are not connected to anything. Static
> >sensitivity might also be a problem if they are mishandled.
> Umm im not sure what you mean...The input to the 4420?Or the
The input to the 4420.
The input to the 4420 is connected to the antenna...The MOSFET
> gate is connected directly to the 4420 output via a 10ohm resistor.
> It seems to be directly linked to the metal enclosure...Dont know why,
> but im throwing it out...