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Design Ideas

More Design Ideas

Modulating a reference allows maximum-value search for phase detection

Modulating a reference and target signal lets you find the maximum modulation based on modulation phase. Read More...

Offline supply drives LEDs

Keep LEDs lit when AC voltage drops. Read More...

Low-component-count logic probe works with TTL and CMOS logic

LED's indicate logic levels. Read More...

Circuit implements photovoltaic-module simulator

Use combinations of diodes to simulate photovoltaic cells. Read More...

Switch circuit controls lights

A light-dependent resistor, a comparator, and a triac control when a light turns on and off. Read More...

Isolated PWM suits low frequencies

Use a voltage-controlled PWM chip to increase low frequencies while preserving the duty cycle. Read More...

Anticipator circuit speeds signal settling to a final value

Use a differentiator circuit to predict the final value of an exponential signal. Read More...

Schmitt trigger provides toggle function

Make a digital signal toggle without a flip-flop. Read More...

Active multiplexing saves inputs

Add an inverter to reduce current and diodes to route inputs to a microcontroller's inputs as needed. Read More...

Transistor tester identifies terminals

It also lets you determine if a transistor is an NPN or PNP type. Read More...

Finely tune the hue of blue-light sources

Get 32 grades of hues between royal-blue and cyan. Read More...

Design provides single-port-to-dual-port SDRAM converter

Read and write operations won't interfere with each other. Read More...

Bicolor LED indicates 10 states

Using a combination of color and blinks, you can indicate as many as ten conditions. Read More...

Zener diode protects FPGA inputs

In a pinch, a Zener diode can save time and prevent a board redesign. Read More...

Relay driver switches two relays with one pin

Logic 1, logic 0, and high-Z make for three possible states: forward, reverse, and off. Read More...

Power supply accepts wide input-voltage range

A SEPIC-based power supply runs from 1.5V to 20V. Read More...

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