MTBF Mean Time Between failures and MTTF Mean Time To Fail are the same numerically. MTTF just considers the time to the first failure. MTBF is more to do with the average period between failures assuming the system is emmediately repaired and put back in operation so that any down time can be...
Forget about Mil 217. it was very conservative and its been dicontinued by the US military for many years.
Forget about TellCordia/BellCore which at least attempts to represent commercial applications.
Just concentrate on the semiconductors and the electrolytics.
Use recent HTOL (High...
All is needed here is a monostable that is triggered by your front wheel and remains in the triggered state for a predetermined time (set by your design) and justlong enough to ignore the back wheel) before resetting.
I have never used the 555 timer (it is a hobbyist IC with very poor...
For such a simple task use Icepak which has a macro so you can optimise the heat sink design for the thermal resistance you are trying to achieve.
The non conformal meshing of the heatsink asembly can be adjusted in any direction (the slack values) and elongated to capture the downwind hot...
Hi Folks,
I am an electronics hardware engineer working on set top box development.
I started out using a FVA, finite volume analysis package, Flomerics /Flotherm. Basically we had not heard of any other application and Flomerics do a good job in marketing.
I found I spent 90% of my time in...
I remember production line testing linear adjustable bench power supplies around 1970. One of the problems was identifying germanium transistors in the control circuitry that had been wired in the wrong way around.
The problem was they were simple alloy junction transistors where the collector...
Even with multilayer boards, it is good practice in order to assist in meeting EMC emissions to provide guard traces for all high frequency clocks. This effectively provides the clock trace with its own private return path, taking the clock noise current out of the ground plane. This assumes use...
