[WTB] NTSC Video Oscillator

Buy, sell and trade PlayStation 1 related software and/or hardware
Forum rules
We do not take any responsibility for what you buy, sell or trade in this forum. You may however report suspicious users and scammers.

Only PlayStation 1 based equipment may be bought, sold and traded here.

Please bump topics only every 14 days (2 weeks) otherwise we will lock the topic.

When listing an item for sale, you must include in each photo alongside the item your name/handle on physical media (paper, cardboard sign, mobile phone displaying it, etc).

You may only list items for sale when your post count is greater than 5 or if you are a verified user.
Post Reply
dan9550
Curious PSXDEV User
Curious PSXDEV User
Posts: 19
Joined: Dec 30, 2013
I am a: Hobbyist
PlayStation Model: 5502/9002
Location: Australia

[WTB] NTSC Video Oscillator

Post by dan9550 » November 23rd, 2019, 1:00 am

Lucky me I'm in possession of a PU-8 board that has the extra space a second oscillator. Would anyone possibly have an NTSC oscillator they would be willing to sell?

It's the 53.69Mhz oscillator if I'm not mistaken.

May consider an entire board or system.

rama3
Verified
/// PSXDEV | ELITE ///
/// PSXDEV | ELITE ///
Posts: 510
Joined: Apr 16, 2017

Post by rama3 » November 23rd, 2019, 2:01 am

Alternatively, use a clock generator, programmed with an Arduino.
It's convoluted but cheap.
https://www.ebay.de/itm/Si5351A-I2C-25M ... 2792530068

Edit:
And a simpler design is a single ESP32 dev module. Using the audio PLL can directly synthesize 53.69MHz and output it on a pin.

retroleah
Curious PSXDEV User
Curious PSXDEV User
Posts: 16
Joined: Feb 07, 2020

Post by retroleah » April 14th, 2020, 7:45 am

You can find these oscillators on aliexpress. they're much bigger though, but you can glue the oscillator to the rf shield and route the wires through to where you hook up the signal. Here's an example of how I do oscillator mods on PS1s:

https://retrofreedom.com/ps1dfo.html

NOTE: It's not exactly 53.69mhz. it's actually 53.693175 mhz.

That's what you should search for. AliExpress is basically china's official website :P

NOTE: Those bigger oscillators are normally used on 5v systems but they usually work on 3.3v power rails. PS1 uses 3.3v everywhere, including for oscillator.

EDIT:
Also, beware the difference between a crystal and an oscillator. What you want is an oscillator.

If you see 2-pin oscillators, they're not oscillators, those are just crystals. The oscillator is the circuit that generates the sine wave, in this case it's a "crystal oscillator" circuit.

Actual oscillators have 4 pins, not 2.

I recommend using real oscillators, not clock generator / synthesizer like the other person above recommended. Real oscillators tend to produce much cleaner waves (as seen on oscilliscope)

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests