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Re: Measuring a AC current
i have seen in a radio transmitter how they measure the output of the power when transmitting, to make sure of that the right effect is being transmitted, in the air.
this is done by laying a thin parralel line in the pcb-layout, right next to the output lane on pcb...
usart protocol
hey i didn´t find anything on google i could use, tryed wiki, if any of you have any good links ??
the UART/USART is for communicating between a RS485 transciever / reciever and a AT90CAN from Atmel. I am programming in assambler !!
infrared signal irda
hey
if you need to do this, what is the easiest / smartes way to do so ??
and how does the com. works on IR ?? when for exsample a remote sends a signal to a tv ??
i have found some standards IR remote´s comunaction is "build" by, but what a about the hardware side ...
hey !
i having some trouble finding a detailed description how the UART/USART "protocol" work ??
also whats the difference between UART and UsART ??
thx in advance
impedanz on OP-AMP
hey !
if i need to know the impendanz for a voltage-follower configuratet OP-AMP, for example a LM324 or LM258, how do i do that ?? is it not somthing that is normally given in the Datasheet ?? if not not, how do i find it ??
hope some can help :)
main reason is as arefeidi says, the reciving hardware becomes more complex for handling and detection of PM.
but the smart think about PM, is that you can transmit serveral logical bits at the same time.
DVB uses this !! for more info .:
https://en.wikipedia.org/wiki/DVB-T...
it sounds to me that some PLL does not work, making the detection for coulor, impossiple....
so my suggestion would be to get a tv-test-picture generator and check all the IC´s that uses PLL and there voltages are correct, proberly start wiht the picture detection circurts ...
i always connect the DC supply GND to the Earth GND wiht a 1-5Mohms resistor, or a capacitor whit a high Xc to 50hz/60Hz and low on HF, and use the DC supply GND to the Chassis/case...
amplifier problem
it still sound to me like you got the wrong reference point on the TDA7294 GND pin, so you got 43,2V(21,6*2) on your supply pin, making the current to high, max voltage for the TDA7294 is +/-40V
other wise you could have placed a speaker whit to low a impedanz, for the...
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