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How to protect Oscilloscope inputs from overvoltages?
Hello Jessy,   The DS1002E entry level scopes were a very good choice when they were introduced, back in 2004. But they are obsolete by now since there are brand new players...
Sunday, 14 February 2016 - 13:46
One Gigaohm resistors
gchapman wrote:One does not have to be young to be trapped; been there, done that Who hasn't?   Alright, next time I'll ditch the euphemisms! :P What I meant was that anyone...
Wednesday, 13 January 2016 - 07:08
One Gigaohm resistors
Quote:The 50Gig was 30% tolerance [...] Ah, that would be due to Johnson (or thermal or Nyquist) noise, which is being produced by all resistances. Given that Johnson noise is...
Tuesday, 12 January 2016 - 13:28
Pizeo Buzzer as a **Microphone Bug**
Erica,   as has already been pointed out, the piezoelectric transducer of your phone (the ‘buzzer’) is a very bad (if not the worst) choice for environmental audio listening...
Thursday, 2 April 2015 - 10:59
Pizeo Buzzer as a **Microphone Bug**
Hello Erica,   EricaStone wrote: I suspect that the buzzer is being used to record room audio. A piezoelectric element is a transducer: It is a device that converts input...
Wednesday, 1 April 2015 - 15:12
What happens in the Flash after-life?
theusch wrote:While the low-level stuff is interesting, and certainly important in some discussions, in this case is it not "overkill" rather than "oversimplification"? Perhaps...
Tuesday, 2 September 2014 - 15:46
What happens in the Flash after-life?
I was fairly sure that my simplified FLASH memory cell description would raise nice and tough questions. But I chose to keep it simple, focusing on the floating-gate memory cell...
Monday, 1 September 2014 - 13:59
What happens in the Flash after-life?
joeymorin wrote:Does this imply that a given cell will work faultlessly until it suddenly loses its ability to hold a charge, with no intervening phases whereby charge is...
Sunday, 31 August 2014 - 13:29
What happens in the Flash after-life?
The data storing mechanism of the FLASH/(E)EPROM devices is based on the special properties of the MOMOSFET cells they are consisted of, where a charge is stored in the insulated...
Saturday, 30 August 2014 - 08:23
Current probe
Quote:IAR I-scope: [...] Whew! What a relief... For a brief moment I thought that Apple introduced their own iScope oscilloscope iGadget... :P Somebody else wrote: If Apple would...
Friday, 4 July 2014 - 16:30
Driving an IRFP350 with an AVR
mr-maurice wrote:According to the datasheet the Gate-Source Threshold Voltage is 4V, if it's the value I'm looking for then it should be ok. Well, not exactly... You will need to...
Tuesday, 10 June 2014 - 07:56
How work a transistor ?
Giorgos_K wrote:lightaiyee wrote:Can someone explain the theory? Actually, *current* is what will do the damage. Voltage, merely, is the reason why current will flow through a...
Tuesday, 27 May 2014 - 13:42

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