To: | [email protected] |
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Subject: | Re: LF: RE: 500 kHz JT4A |
From: | Andy Talbot <[email protected]> |
Date: | Wed, 27 Jan 2010 21:56:58 +0000 |
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I was looking at driving push-pull transmitters from fundamental drive signals quite recently.
How about a frequency doubler? The output doesn't have to have 1:1 mark-space ratio as it only clocks a flip-flop. And simple doubler can consists of a delay line (CR network with around 0.5us time constant) followed by a squarer to give a resulting waveform shifted in phase from the 500kHz drive signal. Then apply this one, along with the original to a two input XOR gate whose output will then consists of a 1MHz train suitable for dividing by 2 for a perfect 1:1 squarewave drive.
Andy www.g4jnt.com This email has been scanned for damaging side-effects by the health and safety police, is guaranteed to contain no substances hazardous to health, but may contribute to dissolving the nether and polar regions 2010/1/27 Rik Strobbe <[email protected]>
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