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AC to AC Converters (AC to AC Power Supplies and Transformer Circuits)
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Last Updated on: Wednesday, June 02, 2021 04:22 AM

Circuits Designed by Dave Johnson, P.E. :
  • Isolated AC Current Monitor -  This circuit uses a small AC current transformer from Magnetek to produce an isolated voltage proportional to the AC current in the primary winding. The transformer contains a single turn primary with a low 0. 001-ohm resistance. It can easily handle 30 . . . [Circuit by David A. Johnson P.E.,  07/10/06]

  • Isolation Transformer Circuits -  A while back I needed to test a circuit at 240vac. Since I needed to safely test the circuit using my oscilloscope, I needed the 240vac to be fully isolated from the power line. So, to step up the voltage, I bought a small isolation transformer from Digikey . . . [Circuit by David Johnson P.E.,  05/29/11]


Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:

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Introduction, definition of terms, Q&As-tran14-2 -  Application Note. . .  [MiniCircuits.com]

 

Isolated AC Current Monitor -  This circuit uses a small AC current transformer from Magnetek to produce an isolated voltage proportional to the AC current in the primary winding. The transformer contains a single turn primary with a low 0. 001-ohm resistance. It can easily handle 30 . . . [Circuit by David A. Johnson P.E.,  07/10/06]

 

Isolation Transformer Circuits -  A while back I needed to test a circuit at 240vac. Since I needed to safely test the circuit using my oscilloscope, I needed the 240vac to be fully isolated from the power line. So, to step up the voltage, I bought a small isolation transformer from Digikey . . . [Circuit by David Johnson P.E.,  05/29/11]

 

Isolation Transformer Passes Millihertz Signal -  08/04/94 EDN Design Idea   You can successfully use an ordinary low-cost line transformer as an isolation transformer in ac circuits that require floating sources. However, at frequencies below 20 to 30 Hz, high distortion and excessive phase shifting occu. . .  [by George Kassabian, University of California, San Diego, CA]

 

Isolator Transformer for Audio Lines -  If you want to do the ground loop elimination in audio path, you have to cut the galvanic connection but pass the whole audio range. The simplest and most common way to do the isolation is use audio transformer which is ment for audio use. Transformers for audio use have some problems like. . . 

 

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