This basic beat oscillator makes continuous wave keyed code and single sideband suppressed carrier signals audible...
Single sideband radio meets LMC555 beat frequency oscillator
Digital AC energy measurement circuit V2 RMS voltage, RMS current, real power, power factor, energy kWh
Dealing with the 110 V/220 V AC mains voltage and measuring the AC load parameters are regarded as a challenge for electronic designers, both in circuit design and calculations...
Add-on beat frequency oscillator (BFO) for shortwave radio
Expensive shortwave radios include beat frequency oscillators, so why not also add one to an inexpensive radio version?...
DPOT push up/down
Some folks prefer pushbutton switches to take effect on push instead of release. These buttons do that very thing...
Dual amplifier active filters
The frequency response of a Butterworth filter is not supposed to have any peaking. SPICE claims the contrary...
Automotive low side output switch architecture suitable for 8 to 48 volt buses and beyond
A novel switch architecture caters to extended battery range coupled with robust protection and diagnostic strategies...
11 myths about power line communication
Power line communication (PLC) has been around for decades. It’s a foundational technology for smart grids and industrial networks. Yet, despite widespread deployments, it’s still widely misunderstood...
Cheap and cheerful LMC555 RC PWM pulse generator
This circuit enables you to generate remote control PWM test signals with a (very) generic (and cheap) chip...
Op-amp LC oscillator uses tank losses for amplitude stabilization
This proposed design eliminates traditional additional requirements for AGC, AC coupling, and post amplification circuitry...
A Bode diagram to display a control loop
This article explains why Bode plots are used to showcase the transfer function of a power supply loop...