Talk:Diode–transistor logic

Misleading statement in operation section?

Two diodes in series are commonly used to lower the voltage and prevent any base current when one or more inputs are at low logic level.

Two diodes in series double the voltage, not lower it. It's not clear at all to me from this description how 2 diodes could improve the turnoff of the transistor base (one in the transistor emitter might). Gareth8118 (talk) 12:54, 6 March 2008 (UTC)[reply]

I suspect that was meant to describe an added diode as shown here. Maybe you can fix it. Dicklyon (talk) 15:57, 6 March 2008 (UTC)[reply]

Simplified schematic

It should be emphisized that the diagram is a "Simplified schematic" and does not actually work. Someone should be able to find a "published" schematic that actually works. I can only provide a design similar to those used in early computer designs. I would hate to think that some future engineer would try to build the circuit as shown and find that he wasted his time. UPCMaker (talk) 22:59, 3 April 2008 (UTC)[reply]

I replaced it with a correct one; not quite as simple, but shows a resistor configuration that will make it work. From the GE Transistor Manual (3rd through 6th editions). Dicklyon (talk) 04:53, 4 April 2008 (UTC)[reply]

This is great! You might add a capacitor across R3 which was common for DTL to reduce saturation delay. That was one of the main reasons DTL was faster than RTL. TTL could not allow a speed up capacitor because it would need one on each input resistor and that would have coupled noise from input to input. UPCMaker (talk) 00:10, 5 April 2008 (UTC)[reply]

Sorry about my comments added to the switching circuits. I just wish someone would fix all the errors and miss statements that I guess come from bad publications. We had the DTL schematic fixed but it went back to the bad one. If someone that was doing the work can't comment then can't someone try to research these circuits.UPCMaker —Preceding unsigned comment added by 206.53.104.196 (talk) 12:12, 25 October 2009 (UTC) Italic text —Preceding unsigned comment added by 210.212.253.106 (talk) 08:13, 18 November 2009 (UTC)[reply]

CTDL

I propose creating an article for CTDL for reasons of consistency. Information about CTDL is already part of this article under the section called "CTDL". I looked at http://en.wikipedia.org/wiki/Logic_family and I noticed that most subclasses of circuits are linked to specific articles.

Aside from this, I would like to understand why DTL became CTDL and not CDTL.

ICE77 (talk) 01:42, 19 February 2011 (UTC)[reply]

Right now it's two lines in this article - myself, I wouldn't bother spinning it out to its own article unless there was a whole lot more about it. How notable was CTDL? If it had inductors in it, it almost certainly never made it to the monolithic integrated circuit stage. --Wtshymanski (talk) 03:24, 19 February 2011 (UTC)[reply]

If that's the case, then DCTL should not be a separate article. It should follow under RTL in a section called "DCTL". Is there any suggestion about CTDL and CDTL? Also, what would be the typical values for R₁, R₂, R₃ and R₄?

ICE77 (talk) 04:08, 19 February 2011 (UTC)[reply]