Design Ideas

More Design Ideas

Adjust power-efficient LED switch to any light intensity

Drawing only microamps (other than load current), this circuit switches in accordance with ambient light levels. Read More...

Complementary-pair dc/dc converter simultaneously doubles, inverts supply voltage

Change a single positive supply into twice its positive and equal negative voltages. Read More...

Dual op amp takes absolute difference

The circuit takes the absolute value of the differences of two voltages using two single-supply ground-referenced op amps. Read More...

Automatic night-light feeds directly from the ac line

Switch an ac load on and off with just four components. Read More...

Simple solenoid driver is adaptable and efficient

Use capacitive reactance to save energy while holding a solenoid in the energized position. Read More...

Design an ultra-low-noise S-band amplifier

Use GaAs FETs to build high-performance RF amplifiers. Read More...

Simple anticipator circuit improves on earlier idea

Circuit jumps to final voltage at input signal's change and eliminates overshoot. Read More...

Perform the XOR/XNOR function with a diode bridge and a transistor

Remember DTL? These discrete DTL-like circuits let you implement the XOR and XNOR operations with a minimum of components. Read More...

Use an op amp as a set/reset flip-flop

Eliminate a flip-flop package by using a spare op amp for an SR latch function. Read More...

Generate a pulse width that is inversely proportional to the square root of an analog voltage

This non-retriggerable monostable circuit performs analog conversion of a mathemetical function to time. Read More...

Power-supply decoupler protects your UUT

Detect and shutdown reverse polarity or overvoltage before damage occurs. Read More...

Build a digital PLL with three ICs

A counter’s self-presetting feedback loop hunts for the center count. Read More...

Signal-powered switch connects devices

Use a switch to selectively connect a terminal, personal computer, or any other originating device to one of four receivers. Read More...

Convert 1 to 5V signal to 4- to 20-mA output

Precision analog current loop converter uses a matched resistor network. Read More...

Linearize optical distance sensors with a voltage-to-frequency converter

Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. Read More...

Use a transistor as a heater

A temperature sensor and a hot transistor hold biological samples at a preset temperature. Read More...

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