Cancel PWM DAC ripple with analog subtraction but no inverter
Using an inverter-free solution to attenuate the PWM DAC output ripple and achieve nearly the same ripple performance and nearly-as-fast…
Universal purpose optoelectronic logic elements
This design idea looks at the possibility of creating passive and active optoelectronic logic elements simultaneously performing the functions AND,…
My favorite design idea of all time…
A look at some clever design ideas that might stick with you through the decades.
Transistor ∆VBE-based oscillator measures absolute temperature
Building on a handy Jim Williams' application note exploiting the predictable BJT VBE change with variable current for temperature measurements.
How many ways can you ramp an LED?
The "thought question" of how to slowly cycle an LED's intensity up and down leads to some interesting design ideas.
Active shunt voltage limiter outshines Zener
Circuit to limit voltage to a maximum of 1.5 V across dissipation limited devices with symmetrical limiting and a 2…
Cancel PWM DAC ripple and power supply noise
Here are more PWM ripple-cancellation design ideas.
Universal logic element on one transistor and its applications
Here's a proposed design for a universal passive logic element of positive and negative logic, made on just one transistor.
CMOS flip-flop used “off label” implements precision capacitance sensor
Different ways to use the CD4013B dual-D CMOS flip-flop for purposes that it was not originally intended for.
Time for a second 3D printer in the lab
The low-cost resin printer has been refined to the point of being a must-have in a lab.