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Resources by crutschow

Solid-state discrete AC/DC relay uses MOSFETs for low on-voltage with opto-isolated control input
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AC/DC Low-Side Switch With Low ON Resistance Uses Two N-MOSFETs and One NPN Transistor
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Two voltages, one twice the other, require only a center-tapped transformer and bridge rectifier
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Electronic Fuses eliminate fuse replacement and current-limit short-circuit power dissipation
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Fuzzy logic is an easy to use technique that can replace PID control loops using microcontrollers
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Momentary PB controls remote bistable circuit with PB LED status using a single wire.
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Low power regulator design for permanent magnet alternators improves reliability
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Simple high-side switch requires only two active devices and a few passive parts
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Two common ICs generate the Radio PB Function for up to 8 PBs, (16 PBs with 2 additional chips).
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Dual +/- Regulated Supply from Single Floating Voltage source Using Two Identical Regulators
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Current Drive Improves Standard Optical Isolator Linarity For AC Audio Frequency Applications
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Simple Modification Allows Linear Potentiometer to Generate A Quasi Audio-Taper Logarithmic Response
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LM317 supply with switching tracking prereg for good efficiency and minimal heat sink requirements.
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Generates constant current to a grounded load as determined by the differential input voltage
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Prevent damage from accidental application of reverse voltage with minimal normal voltage drop.
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Current limiter with max voltage drop of ~1V during normal operation, minimizing dropout voltage.
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