Re: 'Frankenstein' Disk Drives, Done Cheap

From: Gerrit Heitsch <>
Date: Wed, 23 Apr 2014 20:53:52 +0200
Message-ID: <>
On 04/23/2014 08:33 PM, Ingo Korb wrote:
> The schematic in post number 15 is the basic version that just creates
> standard Y/C signals from the VIC2's output.

If you want to use that circuit with TED or a 8565, you need to modify 
R1, instead of 470 Ohm, you need to use 1 kOhm. I got this hint from the 
datasheet for TED and if I use 470 Ohm, the picture is way too dark.

It is also advisable to supply the circuit from its own regulator (78L05 
for example). On the old boards, the modulator runs on the unregulated 
9VDC and does that internally so it's easy to just use that voltage for 
a regulator.


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Received on 2014-04-23 19:01:21

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