If you’ve seen a big air-variable capacitor, you may have noticed that some of the plates may have slots cut into them. Why? [Mr Carlson] has the answer in the video below. The short answer: you can ...

Using the TDA7052A audio amplifier to generate a five octave, linear in pitch voltage-controlled oscillator (VCO).

Abstract: The sine carrier is widely used to realize the modulation for the information in many fields like electrical communication and scientific measurement. Specifically in high-precision ...

Slow light is an electromagnetic wave with a group velocity reduced by optical resonances in the medium through which it is travelling. These resonances can occur in atomic vapours, in photonic ...

Abstract: A novel scheme for frequency-modulated continuous-wave (FMCW) laser generation, based on electro-optic modulation and sideband injection locking, is proposed and experimentally demonstrated.