A micron-scale aluminum LC circuit, composed of a straight-wire inductor (green) and comb-shaped capacitors, is fabricated on the surface of a bismuth-doped silicon sample. When the circuit is excited at its resonant frequency of 7.3 GHz, the oscillating magnetic field (brown) around the inductor interacts with the nearby Bi–electron spin pairs. The circuit’s presence alters the spectrum of allowed photon states the spins can couple to and thus the spins’ rate of spontaneous emission.

A micron-scale aluminum LC circuit, composed of a straight-wire inductor (green) and comb-shaped capacitors, is fabricated on the surface of a bismuth-doped silicon sample. When the circuit is excited at its resonant frequency of 7.3 GHz, the oscillating magnetic field (brown) around the inductor interacts with the nearby Bi–electron spin pairs. The circuit’s presence alters the spectrum of allowed photon states the spins can couple to and thus the spins’ rate of spontaneous emission.

"Animated diagram showing the operation of a tuned circuit (LC circuit). The capacitor stores energy in its electric field E and the inductor stores energy in its magnetic field B (green). This jerky animation shows “snapshots” of the circuit at progressive points in the oscillation. The oscillations are slowed down; in an actual tuned circuit the charge oscillates back and forth tens of thousands to billions of times per second."

"Animated diagram showing the operation of a tuned circuit (LC circuit). The capacitor stores energy in its electric field E and the inductor stores energy in its magnetic field B (green). This jerky animation shows “snapshots” of the circuit at progressive points in the oscillation. The oscillations are slowed down; in an actual tuned circuit the charge oscillates back and forth tens of thousands to billions of times per second."

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together. The circuit can act as an electrical resonator, an electrical analogue of a tuning fork, storing energy oscillating at the circuit's resonant frequency.

An LC circuit, also called a resonant circuit, tank circuit, or tuned circuit, is an electric circuit consisting of an inductor, represented by the letter L, and a capacitor, represented by the letter C, connected together. The circuit can act as an electrical resonator, an electrical analogue of a tuning fork, storing energy oscillating at the circuit's resonant frequency.

Circuit Judge 45LC/410Ga 18.5' Blue Bl Hardwood Monte Carlo Stk

Circuit Judge 45LC/410Ga 18.5' Blue Bl Hardwood Monte Carlo Stk

There are lots of schemes that oscillate in the 40 - 120MHz range, but they usually use LC circuits, varicaps, pin diodes, controlled by 0 to 30V voltage source. This makes the devices more complicated and a special correction of the output levels of the signal is needed. The proposed design offers a wide range of frequency tuning, stable output levels and is powered by a +5V supply.

There are lots of schemes that oscillate in the 40 - 120MHz range, but they usually use LC circuits, varicaps, pin diodes, controlled by 0 to 30V voltage source. This makes the devices more complicated and a special correction of the output levels of the signal is needed. The proposed design offers a wide range of frequency tuning, stable output levels and is powered by a +5V supply.

LC Resonant Frequency Calculator ~ Electronic Circuit Projects

LC Resonant Frequency Calculator ~ Electronic Circuit Projects

1 transistor FM spybug

1 Transistor FM Spybug

We don't know who the [amgworkshop] wanted to listen in on, but they apparently went searching for a small FM wireless transmitter. There's plenty of circuits around, but they wanted something smaller...

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