RE: [PSUBS-MAILIST] K-600 photos

["Ken Martindale" <wmartindale@cfl.rr.com>]

I looked at the schematics and they are simple. It's an AM system.

Incidentally I designed and built a 10 watt transmitter for Lea. The
transducer was ceramic and required around 200 volts peak at 46kHz.

I can send the schematic if anyone is interested. It used Mosfets as the
power element. It was a simple linear amplifier.


Ken Martindale

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Daniel D. Lance
Sent: Tuesday, October 11, 2011 9:40 PM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] K-600 photos

Al Secor has been working on replicating a K-UQC from the schematic 
maybe he can offer some of his observations ?

On 10/11/2011 9:30 PM, Jens Laland wrote:
> Vance
>
> If this transducer were made by a local one-man shop, then it would not
> surprise me if it was a simple magnetostriction type transducer.
>
> Such transducers where often built by placing a signal coil along the
> circumference of a thin nickel tube (much the same way you would wrap in a
> doughnut without covering the hole in the center, i.e. like a toroid), ref
>
>
http://traktoria.org/sonar/amateur_scientist/magnetostriction_hydrophone.php
#diy
>
> Therefore, I believe the said circuit schematics could give us indications
> to what type of transducer the underwater communication system was
> designed for (magnetostrictive transducers are low impedance).
>
> Another thing is that such a type of transducer (in contrast to a homemade
> piezoelectric bender type) performs quite good as a transmitting
> projector, also.
>
> Best regards,
> Jens Laland
>
>
>
>
>
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