Integrated power loss brake features lower energy consumption and reduce costs in data-center fan applications
Fan drivers with power-loss braking capability are presented as options that provide the desired improved safety and thermal efficiency while…
Adjustable triangle/sawtooth wave generator using 555 timer
This Design Idea creates an adjustable triangular and sawtooth waveforms using a 555 timer.
Precision DC motor speed control via pot or DAC
Here's a Design Idea for a winding-resistance-cancelling motor drive with a pot or with a DAC.
Inductor-based astable 555 timer circuit
This Design Idea presents a 555 multivibrator circuit that relies on an inductor instead of the usual capacitor to set…
Linearized portable anemometer with thermostated Darlington pair
This self-heated constant-temperature-delta transistor anemometer is cheap, rugged, and sensitive.
Improved comparators for better designs
Analog and digital comparators allow you to compare input signals by their level.
Making better measurements with your oscilloscope or digitizer
Remembering some very simple rules can improve the accuracy and precision of your measurements.
Frequency doubler with 50 percent duty cycle
A simple frequency doubler circuit produces a square wave output with a precise 50 percent duty cycle.
Getting rid of the diode voltage drop in a charge pump circuit
A simple and efficient way to reduce the forward voltage drop in a diode-based charge pump (discrete circuit) thanks to…
Self-heated Darlington transistor pair comprises new air flow sensor
Here's a practical air flow circuit using to advantage what's often thought of as a disadvantage of the classic Darlington…