Tnx Johan, that is one solution although I want something small and compact
and frequency stable.
73 de mal/g3kev
----- Original Message -----
From: "Johan H. Bodin" <[email protected]>
To: <[email protected]>
Sent: Wednesday, August 26, 2009 8:11 PM
Subject: Re: LF: psu
Hi Mal,
since you mentioned 400Hz (I meant cycles per second of course,
sorry...) I assume that your are about to bring some wartime airborne
equipment back to life.
If efficiency is not at highest priority, take an audio amplifier,
capable of delivering >15W with a good margin, feed a 400Hz sine wave
into its input and connect a 230V => some_low_voltage transformer
"backwards" to the amplifier's output. Adjust the volume control to get
115V at the xfmr's output.
73
Johan SM6LKM
mal hamilton wrote:
Need a psu that gives 115v - 15w output at 400 cps. Input could be
anything ie mains ac or dc.
If nothing is available I have a plan to divide a 4Mhz xtal down to 400
cps then amplify/step up to give 115v/15w
73 de mal/g3kev
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