Congratulations to our Engineering Challenge Giveaway winner:
Michael will be receiving:
A copy of CC25, the special 25th anniversary book from Circuit Cellar
CC Gold completearchive on USB drive
and a one-year subscription (or extension) to Circuit Cellar
and a CC25 cap!
This engineering question was originally published in a Circuit Cellar “Test Your EQ” column. The published answer was as follows.
Question – What does this circuit do and what is the purpose of RB1 and RB2? If Vin = +1.073 VDC and the transistor b = 100, what is Vout?
Answer – This is a common emitter amplifier. Resistors RB1 and RB2 set the bias point of the transistor’s base. CB is a DC-blocking capacitor and this is basically an AC amplifier. If Vin is a DC voltage, it will have no affect on Vout.
Thank you to everyone who participated and submitted answers. We had several correct responses, proving you really know your electronics engineering! Keep an eye out for future giveaways, contests, and trivia here, on our Facebook Page and our Twitter feed.
Note: We’ve made the May 2020 issue of Circuit Cellar available as a free sample issue. In it, you’ll find a rich variety of the kinds of articles and information that exemplify a typical issue of the current magazine.
Circuit Cellar's editorial team comprises professional engineers, technical editors, and digital media specialists. You can reach the Editorial Department at email@example.com, @circuitcellar, and facebook.com/circuitcellar
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