A while back, I published the Design Idea “Simple PWM interface can program regulators for VOUT < VSENSE”. It showed some simple circuits for PWM programming of standard bucking-type regulator chips...
Articles and news - 4
PWM buck regulator interface generalized design equations
Four-channel thermocouple measurement with integrated conditioning now possible with ±1.5 °C system accuracy
Microchip Technology has overcome a thermal measurement and integration barrier with the first single-chip, four-channel I2C thermocouple conditioning IC...
A temperature-compensated, calibration-free anti-log amplifier
The basic anti-log amplifier looks like the familiar circuit of Figure...
HOLTEK new BA76220 passive infrared sense IC
Holtek is delighted to announce the release of its new passive infrared body detection IC, the BA76220, which is specifically designed for security...
Capacitor matchmaker
Precision-matched capacitor pairs are commercially available items, but only in a limited range of values, working voltage, and dielectrics...
Fake contacts, bounced to order
Many recent Design Ideas have involved button-pushing to control power. Some may have been more resistant to contact-bounce than others – but how can we really check that?...
Revisiting µPC1237, a classic audio amplifier
This is just an ultra-quick blog post about a nostalgic IC: µPC1237...
Positive analog feedback linearizes 4 to 20 mA PRTD transmitter
I recently published a simple design for a platinum resistance detector 4 to 20 mA transmitter circuit...
LED driver combines high speed, precision
Applications such as turbidity measurement and densitometry require cleanly pulsed light sources with stable amplitudes. The LED driver illuminates retinal neurons in a biological experiment that has similar requirements...
Driving brushed DC motors
When to use over brushless alternatives...