Autoformer
What would be the proper sequence of using an Autoformer and a surge protector from coach to post?
Forum Discussion
Here are a few useful links:
https://www.bourns.com/pdfs/bourns_gdt_white_paper.pdf
http://www.protekdevices.com/Assets/Documents/Technical_Articles/ta1003.pdf
http://www.electronics-tutorials.ws/resistor/varistor.html
Three companies, three components and each will emphasize the need for their particular components. The gas tube discharge device can handle currents that would blow a TVS diode or varistor clear out of the rig and over the hill.
The MOV is a good device but reacts too slowly to protect against positive and negative spikes that slowly but surely erode silicon junction integrity and drill holes through electrolytic capacitors.
The Transient Voltage Suppressor is an avalanche diode. It has a breakdown voltage an avalanche voltage. When that voltage is reached it shunts across the junction. For AC use two diodes are contained in one device each facing the other. A TVS reacts instantly but has a limited current carrying capability for sustained events.
The object of using all three devices is that one compliments the other two. I choose 190-volts for the TVS rating bcause the rating has to factor peak-to-peak and not RMS voltage.
The gas tube discharge device can handle an enormous amount of sustained current.
But NONE of these devices can do a thing for continuous high (or low) voltage. For that a voltage correction device like an autoformer is indicated.
For exquisitely delicate electronics, a full isolation transformer is the filter of choice, but again, such a transformer is a filter and not a voltage correction device.
https://www.bourns.com/pdfs/bourns_gdt_white_paper.pdf
http://www.protekdevices.com/Assets/Documents/Technical_Articles/ta1003.pdf
http://www.electronics-tutorials.ws/resistor/varistor.html
Three companies, three components and each will emphasize the need for their particular components. The gas tube discharge device can handle currents that would blow a TVS diode or varistor clear out of the rig and over the hill.
The MOV is a good device but reacts too slowly to protect against positive and negative spikes that slowly but surely erode silicon junction integrity and drill holes through electrolytic capacitors.
The Transient Voltage Suppressor is an avalanche diode. It has a breakdown voltage an avalanche voltage. When that voltage is reached it shunts across the junction. For AC use two diodes are contained in one device each facing the other. A TVS reacts instantly but has a limited current carrying capability for sustained events.
The object of using all three devices is that one compliments the other two. I choose 190-volts for the TVS rating bcause the rating has to factor peak-to-peak and not RMS voltage.
The gas tube discharge device can handle an enormous amount of sustained current.
But NONE of these devices can do a thing for continuous high (or low) voltage. For that a voltage correction device like an autoformer is indicated.
For exquisitely delicate electronics, a full isolation transformer is the filter of choice, but again, such a transformer is a filter and not a voltage correction device.
