What are some simple dual polarity power supply circuits using an Lm317 and an Lm337 but using a transformer without a center tap? - Quora
![schematics - Dual power supply by chaining two lm317 voltage regulators in series: will it work? - Electrical Engineering Stack Exchange schematics - Dual power supply by chaining two lm317 voltage regulators in series: will it work? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/48WUw.png)
schematics - Dual power supply by chaining two lm317 voltage regulators in series: will it work? - Electrical Engineering Stack Exchange
![Schematic diagram of input and amplifier section with dual polarity... | Download Scientific Diagram Schematic diagram of input and amplifier section with dual polarity... | Download Scientific Diagram](https://www.researchgate.net/publication/298212462/figure/fig1/AS:339579363184643@1457973437181/Schematic-diagram-of-input-and-amplifier-section-with-dual-polarity-power-supply.png)
Schematic diagram of input and amplifier section with dual polarity... | Download Scientific Diagram
What is a dual polarity power supply using a transformer, a full-wave bridge and a Zener diode? - Quora
![operational amplifier - How make a dual +-12V supply from a 24V SMPS - Electrical Engineering Stack Exchange operational amplifier - How make a dual +-12V supply from a 24V SMPS - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Te1Ky.png)