[Boatanchors] Please review & comment on my Heath Warrior HA-10 amplifier design changes

[Gary Schafer]

Hi rick,

I didn't see any update on your link from what I saw in your first posting?

Here is a link to the Kenwood tl922 amp. On page 8 they show the metering
circuit. That will give you some help.

Also look in some of the latter handbooks for a circuit on the 8877
amplifier or something similar. They usually show the metering that we are
talking about.

73
Gary K4FMX

> -----Original Message-----
> From: Boatanchors [mailto:boatanchors-bounces at mailman.qth.net] On Behalf
> Of Rick Poole WA1RKT
> Sent: Saturday, November 22, 2014 9:47 PM
> To: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Please review & comment on my Heath Warrior
> HA-10 amplifier design changes
> 
> Good evening, Gary.
> 
> I read that link per some suggestions I received earlier this evening,
> and also page 84 of the Heath SB-220 manual, and came up with some
> revisions to the schematic at http://www.rkt-tech.com/warrior labeled
> "UPDATE".
> 
> If you're so inclined, please take a look at that and let me know if you
> think I'm on the right track.
> 
> Thanks...
> 
> Rick WA1RKT
> 
> 
> ----- Original Message -----
> From: "Gary Schafer" <garyschafer at largeriver.net>
> To: "Rick Poole WA1RKT" <wa1rkt at comcast.net>,
> boatanchors at mailman.qth.net
> Sent: Saturday, November 22, 2014 10:39:52 PM
> Subject: RE: [Boatanchors] Please review & comment on my Heath Warrior
> HA-10 amplifier design changes
> 
> This link will get you started on the metering:
> http://www.w8ji.com/metering_amplifier.htm
> 
> basically the grid meter goes from filament center tap to ground. The
> plate
> current meter goes from the top side of the grid meter to B-. you would
> lift
> the B- from ground and it would now go to the meter shunt.
> 
> Good luck
> Gary  K4FMX
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