frequency doubler - Circuitos electrónicos
Circuitos electrónicos
https://circuitos-de-electronica.blogspot.com/2007/11/broadband-frequency-doubler.html
Circuitos electrónicos
https://circuitos-de-electronica.blogspot.com/2007/11/frequency-doubler.html
https://circuitos-de-electronica.blogspot.com/2007/11/frequency-doubler-works-to-1mhz.html
http://www.hobby-circuits.com/files/376/frequency-doubler-with-4069_orig.gif
https://easycircuit012.blogspot.com.es/2013/04/000001-frequency-doubler-with-4069-circuit.html
For those of my friends tube radio builders, who asked me about -Soviet novice transmitter-, -XUSSR QRP TX- (as it pronounced in telegraph), -something authentic, but not too complex- etc, such a RIG should be a good choice - easy to build and clearly adjustable design, small amount of wid.......
http://www.glowbugs.info/2013/04/experimental-qrp-transmitter-by-ub5dt.html
The LMX2595 high-performance, wideband synthesizer that can generate any frequency from 10 MHz to 19 GHz. An integrated doubler is used for frequencies above 15 GHz. The high performance PLL with figure of merit of ?236 dBc/Hz and high-phase detector frequency can attain very low in-band noise and integrated... The LMX2595 high-performance, wideband synthesizer that can generate any frequency from 10 MHz to 19 GHz. An integrated doubler is used for frequencies above 15 GHz. The hig.......
http://www.ti.com/product/lmx2595
Simple AV transmitter, Wireless transmitter, TV transmitter, video transmitter
http://www.wzmicro.com/AVsender.htm
ElectrOSuite.com - Pulse Oximeter LED Current Sinks ADA4505 2 Op Amp. Low power precision current source. Single supply operation
http://electrosuite.com/generator/pulse-generator-2/pulse-oximeter-led-current-sinks-ada4505-2-op-amp.html
This dc voltage doubler circuit produces a voltage that is twice its voltage supply. This is useful when a higher voltage level is needed out of a single l
https://www.electroschematics.com/648/555-voltage-doubler
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https://easycircuit012.blogspot.com.es/search/label/Oscillators and Timers
It's well known that many animals are particularly sensitive to high-frequency sounds that humans can't hear. Many commercial pest repellers based on this principle are available, most of them operating in the range of 30 to 50 kHz. My aim was, however, to design a slightly different and somewhat more powerful audio frequency/ultrasonic sound generator that could be used to train dogs. Just imagine the possibilities - you could make your pet think twice before barking again in the middle of the .......
http://www.circuit-finder.com/categories/sound-and-oscillator/animal-repellent/439/ultrasonic-dog-whistle
https://bywiring.blogspot.com/2013/07/simple-9v-battery-replacement-circuit.html
https://circuitos-de-electronica.blogspot.com.es/2010/10/circuitos-de-frecuencia.html
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