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Re: [TowerTalk] Rotor Brake Delay

To: Brian Alsop <alsopb@nc.rr.com>, Towertalk List <towertalk@contesting.com>
Subject: Re: [TowerTalk] Rotor Brake Delay
From: "Ken Simpson, W8EK" <kenw8ek@gmail.com>
Date: Thu, 24 Oct 2013 19:02:00 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

Hi Brian,

While that might be the simple circuit, this is a circuit board about 2 inches square with four power diodes (1N4001 type), plus two additional diodes that might be 1N4148/1N914 type, a 100 uf 63 Volt cap that I can read, plus the unknown cap that is in 1000 pieces. There are also 4700 and 1000 ohm 1/2 W resistors and 68K and 100K 1/4 W resistors. So this circuit is a bit more complicated.

Two of the 1N4001 type diodes are shorted, as are both of the smaller diodes, and of course the one cap is VERY open, in 1000 pieces.

Certainly there is a schematic someplace!

I certainly would appreciate any help.

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK@FLHam.net or W8EK@arrl.net
Voice Phone  (352) 732-8400


Brian Alsop wrote, On 10/24/2013 1:08 PM:
Ken,

Super simple.

  closed side of CW switch-- diode>---|-- large mfd --|
  closed side of CCW switch--diode>---|-- relay coil--|-------|gnd

There might be a small series resistor at the common diode junction to
the parallel cap and relay coil.

73 de Brian/K3KO

On 10/24/2013 16:07, Ken Simpson, W8EK wrote:

I have a T2X rotor that has the CATS brake delay unit in it.  For some
reason one of the capacitors (the one on the edge of the circuit board)
decided to literally blow up.

Does anyone have a schematic of the CATS brake delay, so I might have a
chance to trouble shoot it?

Thanks.

73,

Ken, W8EK

Ken Simpson
E-mail to W8EK@FLHam.net or W8EK@arrl.net
Voice Phone  (352) 732-8400


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