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Philips 330 delay-line

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Electric Rain

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I've heard that these parts are hard to find... everyone says so. I agree. I really bad need a "Philips 330 delay-line" chip. They say a good place to look is inside a TV. But I need a supplier. I need more than just one. So does anyone know where I can find one?
 

motion

New Member
Is it a 330ns delay line? Does it have to be made by Philips? You might get better responses if you give some more info. For instance, where do you plan to use it?
 

Electric Rain

New Member
Yeah... umm.............. I can't find the Motorola MC1377P chip
or the chroma bandpass transformer either. :shock: What the heck... :cry: Stupid converter.
 

Electric Rain

New Member
:? Yeah, the only thing with that is the IC's have like... 128 pins. :shock: Could I find a good delay line inside a TV at a junkyard or something? And what about the Motorola chip and the transformer? ...I ... just asked the same question over again didn't I? :lol: :D :) :| :( :cry: Well, I need these parts 'cause I really bad would like to go with the schematics I had before. And oh yeah, I don't need a supplier. Forget that. I only need one of all of these things. I was going to sell these on my future website, but I'm just going to build one for my own use. 'Sides, those schematics are free and I don't think I could sell them anyway unless I either got the creators permission, or came up with my own. :roll: So please help me. :) Thank you everyone,

Electric Rain
 

Electric Rain

New Member
I heard sometimes they use 300ns, or 400ns... The guy at that website said that "Motorola suggests a 400ns delay line, though it seems 330ns are more common here in Europe." Thing with that is, I live in the USA, so does anyone know what I could use in place of the 330ns? :? I'm sorry to be such a bother, but this project is quite important. Should I go to a TV repair shop and see if I can find something? Maybe I could buy a $20 broken down TV and then I should also be able to get the coil out of it too. And I tried very hard to find the Motorola chip at google too, but that's not showing up either. :roll: And motion... if I offended you at all by basically blowing off your web page suggestion, I'm sorry, and I didn't mean it. But I just can't deal with those complex chips. :?
 

motion

New Member
If you can't find a replacement for the motorola part, there is the similar philips TDA8501. It also requires a delay line.

Regarding the delay line, I think its purpose is to shift the color sub carrier (3.58Mhz for NTSC) so that the hue is correctly matched to the standard. You can try using a series of cmos gates (CD4069) to act as a phase shifter or try the transformer. Of course, a SAW delay line gives a much more consistent phase shift and consistent hue.

I vaguely remember working on the motorola chip over 5 years ago and the delay line was a problem then. It was much easier working with the Philips digital video parts.

If you need parts, then your best change would be to use parts from an existing VGA to TV converter. A TV would be converting composite video to an RGB signal.
 

Exo

Active Member
why do you need that specific delay line? Any delay line should do as long as it has the right timing

330ns
 

Electric Rain

New Member
Well, here's the thing... I don't know anything about this circuit. All I know is that the guy said to use a Philips 330ns delay-line. So if you are saying that I can use any brand, then please be sure of it because I don't want to blow up a $300 TV. :lol: So, can I? :) Please tell me.
 

Sebi

Active Member
Unfortunately the digital delay made for RAM-refresh (CAS,RAS) pulse delaying.For video applications need analog delay line.
 
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