power supply - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Thu, 16 Oct 2025 18:17:26 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 9VDC Power Supply using Zener and Transistor https://electronicsarea.com/9vdc-power-supply-using-zener-transistor/ https://electronicsarea.com/9vdc-power-supply-using-zener-transistor/#respond Wed, 30 Sep 2020 14:55:02 +0000 http://electronicsarea.com/?p=3464 This Power source can be used to power circuits or electronic devices that would normally use a 9 volt battery, saving us the cost of the battery while being used at home.

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]]> https://electronicsarea.com/9vdc-power-supply-using-zener-transistor/feed/ 0 12V to -12V DC converter circuit using 555 https://electronicsarea.com/12v-to-12v-dc-converter/ https://electronicsarea.com/12v-to-12v-dc-converter/#respond Mon, 16 Apr 2018 21:30:30 +0000 http://electronicsarea.com/?p=1865 This 12 VDC to -12 VDC converter circuit gives -12VDC (negative 12 volts) from a power source of + 12VDC (positive 12 volts), with very few components.

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