Converters: AC to AC Circuits beginning with #-I

AC to AC Converters (AC to AC Power Supplies and Transformer Circuits)   Page 1
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Last Updated on: Monday, October 03, 2011 06:07 PM

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 amps of AC current and provides at least 500vac of isolation. With the components shown, the output AC voltage is scaled so 1 amp of current produces 100mv of AC voltage.

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

150 Ohm Line to 600 Ohm Load Application - AS011 Jenson Transformer Application Note. Isolation transformer with impedance conversion (app note 04/03/02)

2-Way Passive Guitar Splitter - AS013 Jenson Transformer Application Note. From one guitar to two guitar amplifiers (app note 04/03/02)

4-Way Active Guitar Splitter - AS014 Jenson Transformer Application Note. From one guitar to up to four guitar amplifiers (app note 04/03/02)

50 Ohm Long Line Driver - AS029 Jenson Transformer Application Note (app note 6/07)

50 Ohm Long Line Receiver & Driver - AS028 Jenson Transformer Application Note (app note 6/07)

600 Ohm Line Isolation Application - AS010 Jenson Transformer Application Note. Isolation transformer for 600 ohm balanced audio line (app note 04/03/02)

A Zero-Feedback SRPP-Input Headphone Amplifier - Features a series regulated push-pull input stage and transformer-coupled output stage with an output impedance of about 2.5 ohms. It has zero global feedback for open, natural sound without any harshness. Designed by Simon Busbridge (Circuit design added 04/05/06)

AC Couple Analog Signals without a DC Bias Source - 02/03/00 EDN-Design Ideas A conventional ac-coupling circuit in a single-supply system comprises a series capacitor and a shunt resistor to ground. Unfortunately, negative peaks of input signal can exceed 0.3V input operating-range limits of an ADC, such as LTC1402 serial 12-bit sampling ADC. To avoid going below ground, circuit must return shunt input.... [Design Idea by Joseph Luis Sousa, Linear Technology Corp, North Chelmsford, MA]

Additional RFI Protection for Line Input Circuits - AS072 Jenson Transformer Application Note (app note 5/02)

Algorithm Tests for Point Location - 08/03/00 EDN-Design Ideas A recent software project approximated the phase-space trajectory (also known as a strange attractor) of a certain dynamic system by using several nonoverlapping triangles. It became necessary to determine whether particular operating points were on or off that attractor. Determining whether a circle or a rectangle contains a point is trivial.... [Design Idea by Lawrence Arendt, Manitoba HVDC Research Centre, Winnipeg, Canada]

Algorithm Transforms Filter Coefficients - 01/21/99 EDN-Design Ideas To synsize infinite-impulse-response (IIR]-filter functions, expressed as H(z], you commonly use analog prototype-filter functions, expressed as H(s], using bilinear-z transform. This operation entails some algebraic complexity in calculating filter coefficients. The simple algorithm shown here transforms prototype-filter coefficients (W0, W1, W2]to IIR digital-filter coefficients (U0, U1, U2]. These coefficients transform from.... [Design Idea by Frank Vitaljic, Bellingham, WA]

Alway On Signal Sensing Subwoofer Mute Circuit - AS101 Jenson Transformer Application Note (app note 6/07)

An Acoustic Transformer Powered Super-High Isolation Amplifier - National Semiconductor Application Note (app note added 6/06)

AN134 AES & SPDIF Recommended Transformers - (app note added 6/07)

AN-285: An Acoustic Transformer Powered Super-High Isolation Amplifier - National Semiconductor Application Note (app note added 6/06)

Anti-RIAA Equalizer for Line to Mag Phono Converter - AS071 Jenson Transformer Application Note (app note 6/07)

AC to AC: #-A B-F G-I J K-O P-S T-Z
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