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Design Ideas

More Design Ideas

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...

Reduce acoustic noise from capacitors

Adding parts or cutting PCB slots can make a difference. Read More...

Function generator has variable frequency

Use a function-generator IC and an internal reference voltage to provide reliable frequency settings. Read More...

Circuit lets you test capacitors

Check capacitors for leakage. Read More...

Compute a histogram in an FPGA with one clock

Use a histogram to analyze large amounts of data. Read More...

Protect MOSFETs in heavy-duty inductive switched-mode circuits

Measure peak currents and use ac coupling to prevent FET burnout. Read More...

Control an LM317T with a PWM signal

Set a regulator's output voltage under microprocessor control. Read More...

High-speed buffer comprises discrete transistors

Get high input impedance to minimize circuit loading. Read More...

Limit inrush current in high-power applications

Protect circuits from high current until a capacitor charges. Read More...

Generate noisy sine waves with a sound card

A sound card, software, and an amplifier circuit is all you need. Read More...

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