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Electronics => Projects, Designs, and Technical Stuff => Topic started by: iMo on January 26, 2019, 10:15:10 am

Title: MY723
Post by: iMo on January 26, 2019, 10:15:10 am

Out of your junkbox you may create your own LM723, with better parameters, when lucky :)
This is a Sunday's afternoon project for people who like 723 vintage technology.

You may get:
1. lower min operating voltage,
2. more stable and lower noise Vref (here 2.5V),
3. much larger output current,
4. otherwise -> MY723

Here is a schematics which mimics the LM723, with above improvements.
Adjust for your needs, do experiment with different parts and values..
Use at your own risk :)

Title: Re: MY723
Post by: Wolfgang on January 30, 2019, 10:00:03 am

Some comments:

- You forget frequency compensation
- TL431 more stable than 723 ref ? Not really.

Otherwise:
Rush to the patent office. I would buy this when it comes in a TO-220-7 Package.  :)