e13007 grounding issue

Discussion in 'General Electronics Chat' started by techmadman, Nov 23, 2012.

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  1. techmadman

    Thread Starter New Member

    Nov 23, 2012
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    Hello everyone, im a newbie for playing with stuff but i have a question. i building a simple 9v dc to 5v dc converter for my cell phone. the voltage reading is fine across circuit but when i connect the ground for the e13007 chip to the common ground of the circuit the voltage is non existent but if i measure the output of the regulator and touch the common ground with my multimeter the voltage is correct. it seems that the voltage is read correctly only when i use the multimeter as part of the circuit. any ideas, please i would appreciate it.
     
  2. bertus

    Administrator

    Apr 5, 2008
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