Positive and Negative 5 volt power supply

In this video, I've shown to make a power supply which can supply positive 5 volt and negative 5 volt using voltage regulator IC 7805 and 7905.
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[@wellingtonpazmino58]

Excellent video, I have a question, you have technical information if there is any to design a DC DC converter with positive variable input and that has a DUAL symmetrical output (high power approx. 2A) of +15 VDC and -15 VDC. Know of some base design with the theoretical source and some switching regulator.

[@sdcustompedals115]

Very useful

[@kenchidelacerna9896]

Can I use a 1 amp transformer?

[@Rohit75f]

Where it will be used. Please give example. I really unable to understand use of negative voltage

[@waleedraza3362]

can u please tell how can i use this circuit for variable +-5V supply? potentiometer use kr skta hu circuit mein ?

[@purnimaservices4431]

- voltage Keya hota he 🙄

[@karthiyozo20]

Please make project using tl431 stunt transistor sir