16k Sinclair issue 1 pack

[msknight]

I have some N4007 - should I use those instead?

[msknight]

This is messy, but it's "open" so you can see what I've done. - probably something stupid, knowing me.

[1024MAK]

I have some N4007 - should I use those instead?

No. They are designed for low frequency use.

Mark

[1024MAK]

This is messy, but it's "open" so you can see what I've done. - probably something stupid, knowing me.

I think I will need to open those pics on a PC rather than my 'phone while crawling around in the loft

Mark

[msknight]

I think I will need to open those pics on a PC rather than my 'phone while crawling around in the loft

Don't hit your head on any beams!

[msknight]

Just for good measure... measure... geddit? ... this is what's being fed up the /RD line.

[msknight]

Well, after my repeated botched attempts, I managed to short the ground to the 9v and caused some trouble. After reverting the RAM pack and re-bridging the cut connectors... fortunately, the RAM pack is working.... somehow.

I'm doing nothing more until I receive more solid advice, because it's clear that I am at risk of doing some serious damage.

[siggi]

You should use Schottky diodes to pull TTL signals to low!

The diodes and the resistor can be soldered directly to the pins of the connector:

https://forum.tlienhard.com/phpBB3/down ... hp?id=8612

(Perfectly viewable on a 22" monitor)

[msknight]

I have...
1N5822
1N5408
...both are quite chunky.

I also have 1N4007 but Mark has already said those are for low frequency applications.

What do you recommend me getting?

[msknight]

I also have - BZX85C5V1