Monthly Archives: October 2011

High Voltage High Power Fun

A friend stopped by this weekend and dropped off some fun toys.

Magnetron bench setup
Magnetron bench setup

He needs a frequency locked 1000W 2.45GHz signal based on a microwave magnetron. I like the magnetron solution because it’s a cheap way to generate such a high power RF signal but they wander between 2.42GHz and 2.48GHz which is a problem for his application. I have volunteered to help him figure out a method to lock the output frequency. I think it will make a great writeup for the blog since I expect it will take a significant amount of reverse engineering and experimentation to make it work.

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Serial Port Silliness

Do you frequently use serial ports without a second thought? All you need is RX, TX and GND for a basic configuration along with some RS232 or MIL-STD-188 drivers for the cable, right? The fact that the bits are transmitted asynchronously is implied. The only difference between a Data Terminal Equipment (DTE) device and a Data Circuit Terminating Equipment (DCE) device is just the connector pinout. At least that’s what I always assumed.

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