Electron
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150Watt FM power amplifier board Test
150Watt FM power amplifier board Test ...
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BH1414K Wireless (FM transmitter) Audio Link IC
The BH1414K is a FM stereo transmitter IC that uses a simple configuration. This IC consists of a stereo modulator for generating stereo composite signals and a FM transmitter for broadcasting a FM si...
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SL16 SERIES RF COAXIAL CONNECTORS
SL16 Radio frequency of the type coaxial joining machine UHF Series that each match and have adoption end tooth that require strictly nibble general devices design and it spends to be at 300MHz good o...
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Near field or far field?
Several engineers, including myself, were sitting around talking one day when the question arose, “When does a product find itself in the far field of a radiation source?” One of the engineers, an aut...
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IR Remote Control Jammer
Don’t like your little brother’s TV channel selection? Hate the volume your wife sets the stereo at? Want to just annoy someone? This circuit does all that and more by jamming most IR remo...
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LED Chaser
I don’t know why, but people like blinking lights. You see LED chasers everywhere, in TV shows (Knight Rider), movies, and store windows. This schematic is my version of a simple 10 LED chaser. ...
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12 Volt Lamp Dimmer
Here is a 12 volt / 2 amp lamp dimmer that can be used to dim a standard 25 watt automobile brake or backup bulb by controlling the duty cycle of a astable 555 timer oscillator. When the wiper of the ...
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Automatic 12 Volt Lamp Fader
This circuit is similar to the “Fading Red Eyes” circuit (in the LED section) used to fade a pair of red LEDs. In this version, the lamps are faded by varying the duty cycle so that higher power incan...
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1.5 Hour Lamp Fader (Sunset Lamp)
Similar to the one above, the sunset lamp comes on at full brightness and then slowly fades out over 1.5 hours time and stays off until power is recycled. ...
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Sunrise Lamp
In this circuit, a 120VAC lamp is slowly illuminated over a approximate 20 minute period. The bridge rectifier supplies 120 DC to the MOSFET and 60 watt lamp. A 6.2K, 5 watt resistor and zener diode i...