ESC Con 2015

Design Ideas

More Design Ideas

LEDs indicate sound level

Build a battery-operated portable meter to measure sound-pressure levels. Read More...

Driver circuit lights architectural and interior LEDs

Hold the current constant and within tolerance. Read More...

Use op amps to make automatic-ORing power selector

Replace diodes with FETs to reduce power loss. Read More...

Charging time indicates capacitor value

A comparator changes state when capacitor voltages are equal during rise and fall, which triggers a time measurement. Read More...

Positive edges trigger parabolic timebase generator

Generate sawtooth, quadratic-parabolic, and cubic-parabolic signals. Read More...

Measure small currents without adding resistive insertion loss

Floating current to voltage converter can be inserted in-line with no voltage drop and no need for a ground reference. Read More...

Power resistor varies in value

Under controlled conditions, a MOSFET can function as a variable power resistor. Read More...

Minimize noise in power-supply measurements

Eliminating excess noise from an oscilloscope probe yields better measurements. Read More...

Compensate for four-wire sensor errors

Measure sensor values and calculate resistance. Read More...

LED-current limiter accepts ac or dc

Prevent excessive current from overdriving your LEDs. Read More...

Voltage inverter employs PWM

Use two diodes and two capacitors to generate a negative voltage. Read More...

Form positive pulses from negative pulses

Create positive pulses even when negative pulses vary in amplitude. Read More...

Use resistor noise to characterize a low-noise amplifier

Measure gain or noise with an AC voltmeter. Read More...

Protect power-LED strings from overcurrent

Add diodes and a transistor to a current mirror to prevent LED damage. Read More...

Simple flasher operates off ac mains

A few components create an illuminated switch. Read More...

Build a UWB pulse generator on an FPGA

Make pulses that reach twice an FPGA's clock frequency. Read More...

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