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Re: adding caps to opamps
well, the noise originates from the switching output of my board. the ripples travel back to the op-amp output, thus op-amps' power supply. since it's a voltage buffer, the inputs of the opamps are also rippled. it is at this input node i'm using as a reference to...
Re: adding caps to opamps
so putting capacitors won't have any bad effects DC wise? the noise frequency i'm dealing with is probably around 160Mhz to 600Mhz. although the 600Mhz noise i doubt is from the circuit. i suspect it was inherent from the scope and probe.
adding caps to opamps
is it wise to add capacitors to opamp negative, positive and output terminals? What would the effect be if let say I add values around 47uF to 200uF to these nodes?
Basically I'm using them as voltage buffers and these caps are to bypass signal noise from rippling back to...
Re: PCB board in protel
if you just want to see how the mirrored version looks like, just go to print, and set it there. i believe its in the preference. you can choose which layer to appear and which layer on the top.
here is a link to ear plug. quite good, it blocks almost everysound. this is used by people who cut timbers with chainsaws. have you ever hear chainsaws at full speed? it's damn loud. and this cuts it down pretty much. imagine what it would do in your room...
you just use a clipper and clip the top end off. becareful not to clip too close to the base. 2 tiny wires are connected from the chip to the legs.
i'll measure the currents on the 2n2222 next week.
i cut off the top of a 2n2222 by ST and biased it as shown but without a resistor. it begins to glow at around 9.5Vs. Truly remarkable. Yellow and its real nice. I showed another guy and had him guess what the component is.
He never guessed it. Haha.
yes, i've seen some of bob pease's show in the national website. strange yet funny guy. i've also read his book. very informative. I haven't had the chance to read his side column in the journal though.
does it work with pnps too? I've a couple lying around that hopefully i can tear them apart...
How do you actually make impedance match? And how does impedance trace work?
Why oscilloscope terminate on 50ohm? And why most of the traces are 50ohms traces? Does it depend on how long the trace is? Or as long as it's a 50ohm trace, length doesn't matter?
What is the difference between...
Re: zero resistor?
or in your layout you might want to replace that part with a finite resistor, so you put in a zero resistor instead of just drawing a trace. makes life easier to modify the circuit later in testing etc.
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