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Design Ideas

More Design Ideas

Microcontroller drives DSEC motors

Use satellite disk motor in stepper-motor applications. Read More...

CMOS circuit latches relays

A driver circuit take pulses and sets relays. Read More...

Power USB devices from a vehicle

Supply power to two USB devices from the cigarette lighter or other power source. Read More...

Microcontroller interfaces to 24V

Convert 24V industrial signals to TTL levels. Read More...

Use LEDs as photodiodes

Ambient light changes an LED's resistance, making it act like a photodiode. Read More...

Circuit achieves constant current over wide range of terminal voltages

Eliminate errors caused by bias currents and temperature drifts. Read More...

Limit inrush current in low- to medium-power applications

A MOSFET and IGBT guide current to safe places. Read More...

Electronically tinge white-light source

A tricolor LED lets you produce different shades of white Read More...

Detect live ac-mains lines

Detect magnetic fields on a wire and light an LED Read More...

Transistor boosts regulator current

Use a common voltage regulator to make a current source Read More...

Set LEDs’ hue from red to green

By varying the current through red and green LEDs, you can vary the hue in 32 steps. Read More...

Circuit synchronizes sensors and cameras

Trigger circuits provide measurements and images at the right time. Read More...

Circuit measures capacitance or inductance

Use instruments you already have and a few equations when you don’t have a capacitance meter. Read More...

Perform hexadecimal-to-BCD conversion in firmware

Converting in firmware eliminates a conversion chip. Read More...

Ceramic speaker driver also drives motors

DC coupling turn the speaker driver into a motor driver. Read More...

Light collar helps you find your pet in the dark

Keep your pet from getting lost in the dark. Read More...

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