i'm trying to find a very inexpensive way to generate a 120Khz sine wave to act as a carrier wave for a cheap system. browsing around the internet gives me way too many options.. function generators, op amps, integrators, etc.
what is the best and cheapest option? i'm new to circuit design but i've taken a lot of classes and am a pretty fast learner
On a sunny day (Sun, 11 Nov 2007 22:53:20 -0000) it happened Johnny Chang wrote in :
+12 | | |-- ---------->| BF254B | | |-- || C1 |-------- out |L1 |--------| || | | | C2 R1 1K | | | ------------------------ | ///C2 = 2 x C1
L1 together with C1 C2 should be tuned to 120kHz It is not a perfect sinewave, a bit flattened on one end, but it should do.
go to analog.com, search dds, sort of $5 products, needs a bit of harwdare on top. disclaimer, only looked at the stuff cos i was interested, and I have'nt used their dds products
Martin
Just your luck I tripped across recently...
Ha, Look at page 5 on that DOC, a "Bubba oscillator", sounds kinda of funky!
I devoted 30 seconds of Googling to find Mr. Bubba. No luck :)
D from BC
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