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MOSFET ? JFET ?
Rds strongly depend on Vgs.
If Vgs at level of treshold , Rds depend on Ids.
When Vgs over treshold about 2..4 V, Rds becomes independent from Ids (see datacheet on MOSFET
figure Rds vs Ids and Rds vs Vgs)
Rds independent from Vds because
ds=Rds*Ids ~ 0.01V..1V when MOSFET...
MOSFET ? JFET ?
This is static parameters :
Rds responsible for power losses and heating MOSFET Ploss = Rds*Ids^2
Ids = maximum allowed current for your application.
Vds = maximum allowed Drain to Source Voltage
Vgs = voltage treshold for opening MOSFET.
When you compare two MOSFET :
Ids...
Which GSM module ???
We have used wavecom in devices, that working far from city, in the field, inside metal boxes, all seasons, as unnattended data aquisition module.
After two year uninterrupted exploitation from
20 devices, all modem continue work, without
malfunctions. Device measures...
pc spying using crt emissions
Well it's no doubts that motherboard and other chips
on PCB generate EMI, and it's can be used to h(at)ck you comp. But it's important , imho, for companies
and military agencies. Why do you spend your life for this. Are you have unlimited time for this...
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