power supplies



	DK5VF


	Webmaster: DK5VF Siggi


	last update:


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	11.09.2012


	Email:dk5vf@darc.de



	DN5VF

This Homemade Power Supply is built up in the 70 ties. Data: 12-15V/23A. After I could have a solid state Amplifier with 400 WPEP my own it was necessary to increase the output current of the Power Supply. But it was a homemade transformer by myself. It was impossible to modify the transformer to increase the current. So it was a good day to find a used transformer in ebay. It has 4x 22V / 9,5 A. The picture shows the Power Supply after the Modification. The 7 regulation Transistors BDY 57 supply 50 A certainly. But therefor that no crash comes I have adjusted the current limit to 46 A.


		Two other BDY57 are in use for Current limiting and for gain operation in the regulation chain. A negativ Regulator 7912 is the main stabilyzer in this Equipment.


	The Power Supply is running very well all the time in Fielddays or at home in the shack. No EMI problems occurs and it has worked as a indestructible Powerstation

	I have no problems and no doubt about the function with this Power Supply.

	For Questions and Informations send a email on my Email adress please.