[GreenKeys] Re: TT1F/TXC-1 and PP-86E fuses blew !!!

[drhouse at mchsi.com]

Wayne,

How do I place these 47 Ohm resistors?

1N4007 Diode cathodes are common to pin 1 but not soldered yet...
The diode Anodes are soldered to pins 2 and 3.

I have two 47 ohm 1/2 watt resistors in my hand. There are more available.

Please reply soon or call me on my cell phone (815) 353-0494

MANY THANKS,  Don K9TTY


>  a couple 22-47 ohm resisters in series would be just fine to limit the
> initial surge when first turned on.
> 
> Wayne  wb0cte
> 
>  
> 
> -------Original Message-------
> 
>  
> 
> From: drhouse at mchsi.com
> 
> Date: 10/13/05 13:27:16
> 
> To: Paul Wills
> 
> Cc: greenkeys at mailman.qth.net
> 
> Subject: Re: [GreenKeys] Re: TT1F/TXC-1 and PP-86E fuses blew !!!
> 
>  
> 
> Hi Paul,
> 
> The commercial WZ3 solid state replacement uses some type of thermistor. Not
> sure what kind and how it
> 
> is wired. I am trying to get by until the filming is over and then replace
> the diodes with a NOS 5Z3.
> 
>  
> 
> Don
> 
>  
> 
>  
> 
> > Is there not supposed to be some resistance in series with the diodes to
> more
> 
> > properly
> 
> > match the impedance of the tube they replace?
> 
> >
> 
> > PDW
> 
> >
> 
> >
> 
> > On Thu, 13 Oct 2005 18:01:55 +0000, drhouse at mchsi.com wrote :
> 
> >
> 
> > > NO Roy,
> 
> > > The diodes are installed in the right direction (but may be soldered to
> the
> 
> > drop
> 
> > side of the filiment
> 
> > > transformer winding instead of the B+ side of the winding). The machine
> worked
> 
> > fine for
> 
> > about 30
> 
> > > minutes. just before the fuses blew I had plugged in an RA-87 rectifier
> a
> 
> > model 14TD
> 
> > and M15 all into the
> 
> > > same 15 amp circuit. I am wondering if the voltage drop may have
> increased
> 
> > the current
> 
> > enough to blow
> 
> > > the 1/8 amp TT1 fuse and the PP-86E 2 amp fuse.... Gosh darn it anyway.
> 
> > >
> 
> > > Don
> 
> >
> 
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