Electronics Projects, 15V Symmetrical Power Supply Circuit 7815 7915 article
"power electronic projects, power supply circuit, power supply project, simple circuit projects, " tagged with
78XX and 79XX negative positive regulator ICs, you can easily supply circuit with the series regulator circuits. This circuit gives a nice symmetrical +-15v output printed circuit desing there is a list of the material scope of the pcb, etc. shared images of the schema.
Source: http://www.siliconchip.com.au/cms/A_112363/article.html Alternative link: 15v-symmetrical-power-supply-circuit-7815-7915.ZIP alternative link2 alternative link2