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Halbert Stone
Distance: 1.5 Mi1320 Miller Dr
95403-1623 Santa Rosa -
Micromat Inc
Distance: 2.0 Mi1055 W College Ave
95401-5059 Santa Rosa -
Systems Performance Consultants
Distance: 2.2 Mi131a Stony Cir. Ste. 500
95401 Santa Rosa -
Cadstar, Inc
Distance: 2.3 Mi2755 Mendocino Ave Ste 204
95403 Santa Rosa -
Arlyle Consulting
Distance: 3.3 MiPO BOX 474
95402-0474 Santa Rosa
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Description
The secondary of a transformer is used in this technique to develop a drive voltage across a small resistor, typically 10 to 50 Ohms. This resistor is typically placed in series with the loop's feedback resistor as shown in the diagram below. The transformer's frequency response does not have to be flat over the measurement range but does need to provide an adequate drive level over the measurement range to ensure a good signal to noise ratio.