mettula

it is for an rf circuit. mostly it is used as a voltage limiter........

anyone can plz suggest an alternative for the diode 7v5 - my local shop hasnt :-\

i wish to ask what is the difference between 74LS193 and CD74HCT193E - do i get the same result if one is not available in my local shoop. I think they are the same but different name due to diferent manufactur. Am i wrong ???PLZ advice ... 10ks

Use an audio isolation tranformer before entry in the serial port. it has to be of ratio 1:1 and 600:600 ohms. I found a good one at radio shack http://www.radioshack.com/product/index.jsp?cp=&productId=2103994&tab=summary

A suggestion; try using the formula t = rc (t=time constatnt, r = resistance in ohms, c = capacitance) I dont' know exactly on the topic and if anyone out there would correct me i'm grateful . LOL