{"id":1355,"date":"2012-01-06T06:55:04","date_gmt":"2012-01-06T06:55:04","guid":{"rendered":"http:\/\/clydelettsome.com\/blog\/?p=1355"},"modified":"2019-06-04T18:02:26","modified_gmt":"2019-06-04T18:02:26","slug":"charging-a-car-battery-with-a-power-supply","status":"publish","type":"post","link":"https:\/\/clydelettsome.com\/blog\/2012\/01\/06\/charging-a-car-battery-with-a-power-supply\/","title":{"rendered":"Charging A Car Battery With A Power Supply"},"content":{"rendered":"\n\n\n\n
\"\"<\/a><\/td>\nKen. T:<\/strong> Would it be safe to charge a battery with a mixture of the 2? The reason I ask is because atx power supplies often have a -5v and -12v rail, I would like to add a potentiometer to properly give a car battery a 13.5v charge. But I’m not sure is the negative voltage would have an unwanted effect on the on the battery. I would be using diodes and to direct the flow of voltage. But I wanted your opinion before I attempt. Thanks for the videos!<\/td>\n<\/tr>\n
\"Clyde<\/a><\/td>\nAnswer:<\/strong> It should be safe to mix the two. However, I would suggest you use two ATX power supplies. Use the +12V and ground from one supply and the +5V and ground from the second supply.\u00a0 Use the following Figure to configure the circuit.<\/p>\n

\"\"<\/a><\/p>\n

Note: The negative of each voltage source in the Figure is the ground of the ATX power supply.<\/p>\n

Good Luck!<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Are you a struggling with a technical question? Would the answer to the question improve your life or business? Submit your technical questions<\/a>.<\/p>\n

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Ken. T: Would it be safe to charge a battery with a mixture of the 2? The reason I ask is because atx power supplies often have a -5v and -12v rail, I would like to add a potentiometer to properly give a car battery a 13.5v charge. But I’m not sure is the negative … <\/p>\n

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