Answered Essay: 2. Assume that the power switch for the radio is in the ON position, and that the battery is in good condition. A voltmeter placed a

2. Assume that the power switch for the radio is in the ON position, and that the battery is in good condition. A voltmeter placed at the junction of R4 and D2 displays a reading of 1.5 V. What should the voltmeter read from the anode of D1 to ground?

3. There are seven capacitors in the AM radio circuit—C1, C2, C3, C4, C5, C6, and C7 . Of these seven capacitors, list four that have no effect on the tuning of the radio.

4. In which direction would the wiper arm of R3 have to be moved to increase volume?

5. In the construction of an electronic circuit, using a circuit board instead of point-to-point wiring provides several advantages. List three of the advantages of the printed circuit board.

6. In the AM radio circuit, which two components form the tuning network?

7. In the AM radio circuit, list four of the six components that form the AM tuner.

8. In the AM radio circuit, which capacitor decouples the tuner output?

9. In the AM radio circuit, which component controls the volume, and which component couples the tuner’s audio output signal to the volume control?

10. In the AM radio circuit, which component is the power audio amp?

Expert Answer

 

2)In some circuits negative is the same as ground, but in some circuits ground = 0 volts and in other parts of the circuit there is a negative voltage that is below ground. If you connect a voltmeter between ground (0 volts) and -1.5 volts it will read a difference of 1.5 volts, with the ground being most positive. Electrical parts work because of a difference in potiential.

3) C1 and C3 or C2 andC4)If a frequency counter is available then the chore will be super easy. If not, some experimenting with different pairs of capacitors (C1 and C3 or C2 and C4) will be necessary to bring both oscillators to the same frequency.

4)Wiper systems generally use two wipe speeds to suit the driving conditions and also an intermittent wipe facility is incorporated.To achieve this arrange­ment the circuit is switched-on so that the current through the armature is reversed after the motor has stopped. This charges the polarity of the brush in the permanent magnet motor so that the armature rotates in the opposite direction.

5) Thin size allows close packing of multiple boards or low profile products.

• Very consistent electrical properties reduces circuit variation and improves overall quality

• High electrical properties allows for high performance and consistent performance circuits

• Overall high quality and reliability

• Ease of inspection

6) L-C(inductor and capacitor) are the tuning components .

7) The combination of C1 and L1 comprise a resonant circuit, refered to as a tank circuit. Its purpose is to select one out of many available radios signals. The variable capacitor C1 allows for tuning to the various signals.

8)The decoupling capacitor at position (G) removes the radio frequencies by passing them to ground. The audio information signal remains and goes to the headphones.

9)10K preset VR controls the volume to the input of the amplifier. IC1 is the micro power audio amplifier that works between 4.5 to 12 volts DC. The amplified sound can be heard through the low impedance head phone or small Mylar speakers.

10)The LM2876 is a high-performance audio power amplifier capable of delivering 40W of continuous 8Ω average power to an 8Ω load with 0.1% THD+N from from 20Hz–20kHz.

Buy Essay
Calculate your paper price
Pages (550 words)
Approximate price: -

Help Me Write My Essay - Reasons:

Best Online Essay Writing Service

We strive to give our customers the best online essay writing experience. We Make sure essays are submitted on time and all the instructions are followed.

Our Writers are Experienced and Professional

Our essay writing service is founded on professional writers who are on stand by to help you any time.

Free Revision Fo all Essays

Sometimes you may require our writers to add on a point to make your essay as customised as possible, we will give you unlimited times to do this. And we will do it for free.

Timely Essay(s)

We understand the frustrations that comes with late essays and our writers are extra careful to not violate this term. Our support team is always engauging our writers to help you have your essay ahead of time.

Customised Essays &100% Confidential

Our Online writing Service has zero torelance for plagiarised papers. We have plagiarism checking tool that generate plagiarism reports just to make sure you are satisfied.

24/7 Customer Support

Our agents are ready to help you around the clock. Please feel free to reach out and enquire about anything.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

HOW OUR ONLINE ESSAY WRITING SERVICE WORKS

Let us write that nagging essay.

STEP 1

Submit Your Essay/Homework Instructions

By clicking on the "PLACE ORDER" button, tell us your requires. Be precise for an accurate customised essay. You may also upload any reading materials where applicable.

STEP 2

Pick A & Writer

Our ordering form will provide you with a list of writers and their feedbacks. At step 2, its time select a writer. Our online agents are on stand by to help you just in case.

STEP 3

Editing (OUR PART)

At this stage, our editor will go through your essay and make sure your writer did meet all the instructions.

STEP 4

Receive your Paper

After Editing, your paper will be sent to you via email.

× How can I help you?