Re: LF: Decca component

[G0MRF@aol.com]

In a message dated 5/30/02 11:30:54 PM GMT Daylight Time, Datter@btinternet.com writes:


> Mike,
>
> I collected 4 spare IRF250 power Mosfets for the Decca TX from the Crawley
> Club at the meeting last night and will stick them in the post to you
> soonest. I was unable however to find among the remaining bits and pieces
> one of the protective MOV devices but similar ones are available from RS or
> Farnell distributors
>
>                                         73,  de  Derek Atter,  G3GRO


It should be possible to determine the voltage rating of the MOV from the manufacturers part number in the Decca manual. If the original part is not available I wonder if its possible to remove a working unit from one of the other modules and measure its capacitance and compare the value against a potential replacement. Hopefully minor differencies would not be critical as the MOV is in part of the circuit operating in class D and there should be sufficient drive to mask small changes in capacitance.