The Sinclair QL Forum

Francois, I might have a last spare PSU still available. It's handmade and provides more power (2.5 Ampere or more). I've sold 4 similar PSUs. A person asked for it years ago. I may ask that person: he might no longer be interested. Sure I would be interested, however I am located in Canada, so it ...

Common GND is in fact either side of the AC transformer output, which one doesn't matter (BTW I managed to scavenge several 12V transformers from some cheap Chinese Christmas lights my wife wanted to throw away - They seem to be a good source for this and are even outdoor rated ;) ). The Tetroid (a...

Even if it worked for some time, I wouldn't load that good 'ol PSU with nearly twice its rated current. The switching regulators do in fact slightly reduce current input, but not that much. Even if you made it work, you'd still be faced with the nonstandard power connector. Stitching together a 9V-...

... if both QLs are equipped with Teroid switching regulator ? Would the better efficiency of the switching regulator be enough to reduce power consumption by half ? These PSU are difficult to come by so using a single one for two QLs would be nice. What if one of these QLs has a GoldCard ? (My unde...

Peter wrote: That's correct in inactive state (Bit 0 = 0). When you pull the line high, it should change.

It does. When I apply 3.3V to the QLnet pin, the value becomes 57.

Let's wait for the BAT43.

Derek_Stewart wrote:Hi,

There needs to be a switch on the connector

There is.

Derek_Stewart wrote:Hi François,

Can you tell me what type of socket you are using?

Sorry, these sockets were bought at a local electronic shop, so I have no number or spec sheet.

François

What you could do, is to remove your circuit and just apply GND or 3.3V to the QLNET line. Then check if you see bit 0 of PC.MCTRL (at $18020) change accordingly. Make sure no network driver is loaded, so the Q68 does not attempt to drive the line high while you apply GND! Hi Peter, is PC.MCTRL a b...

Hm, my money so far is on the socket. But hard to tell as I couldn't find your model anywhere. All similar looking ones had one contact come out on the top, which doesn't seem to be the case with yours. Cheers, Marcel These sockets were very easy to figure out as the bottom is open so you can see w...

Derek_Stewart wrote:Hi François,

Are the connections to the Network sockets correct?

I checked them when I built the interface, but I will check again. I will order a few BAT43.

Francois