Electronic Hardware Engineer Embedded Systems Architect
$10-30 USD
Lezárt
Kiadva ekkor: körülbelül 6 évvel ezelőtt
$10-30 USD
Teljesítéskor fizetve
Looking for an awesome Embedded Systems Architect, Electronic Hardware Engineer.
You will need to solve a test problem to show your problem-solving skills and after that, if you make it, there is a chance to join our team on several ongoing projects.
Find attached the file problem. (if there is any issue with the file, just send me a PM and will send you again the problem).
The first person to send the correct answer will be awarded and go to a personal interview process. The time is running!
Looking at it
This looks a simple circuit but yet a complicated oscillator using 2 transistor
and
output is taken from collector since this configuration is common emitter biasing.
And when provide voltage source, oscillation in circuit will produce sound of certain frequency in speaker.
Also there is function of switch which increases the oscillating frequency on closing the switch.
Sound from speaker would be sound whistle whose pitch changes when button is pressed.
I havent calculated the exact frequency.
exact frequency of sound can be found by simulation on proteus,etc