Elenco Electronics PT-323K Service Manual

Function / Signal Generator The included function generator is capable of producing sine, square and triangle waveforms. The frequency of this gener

Breadboard Section 10q 1660 tie points including 6 es. The Elenco trainer is eindependent bus lin uipped with two breadboards containing a total of

11Fig s are just a s tions for connecting circuits using bre b ure P-15 & P-16 are sample series and parallel circuit connectio

12 Project Objectives: • To learn how to safely and effectively measure DC voltage using a digital multi-meter. • Gain practice in creating simpl

134. What cell terminal was the red lead connected to? 5. The negative terminal of the cell should be connected to the _______ test lead. (a) bla

14UsAmm rojec• ulti-meter. • simp ms. • le DC ems Needed: k  resistor t e current me 1. er from the circuit g meters. ries. 4. e mode n fo

Experiment 2 15 2. ate bus lines so the circuit will not be “shorted”. 3. to the black test lead on the DMM. 5. it to the open lea

16Us rs Ohm Project Objectives: • To develop an understanding of the ohmmeter function of a DMM. • To learn how to use the variable resistanc

17x rE pe iment 2 Ohmmeter 1. Insert jumper wires into the two outside terminals for the 1k 100k potentiometers (variab ce measurements

Ohelation ip of I an tant Rro To prove the direct relationship of current to voltage when a set resistance is given. • To obta ems Needed: - Electr

Contents Introduction 2 Equipment & Component List 3 Introduction to Digital Multimeters 4 Introduction to the Elenco XK-70

19I L ot be perfectly accurate to the calculated v _ ______________________ ________________________________________________________________ ___

20hm’s Law elationship of I and R with a Constant V roject Objectives: • To prove the inverse relationship of current to resistance when a se

21 red, gold) resistor? _ mA 9. new current reading. Make sure the meter range is set correctly to the calculation 10. wer supply off and rem

22hm’s Law elationship of Power to V with a Constant R roject Objectives: • To show the use of the power formula by demonstrating how power i

236. er for the measured values in step 4. __________  g ________ mW 8. ____ the voltage. 9. we ow ha 11. n the ______ mW _____

24hm’s Law elationship of Power to I with a Constant R roject Objectives: • To show the use of the power formula by demonstrating how power i

25RRes sPro• • Items - Di ital - Re nts, make sure there is no power applied to the circuit. esistors istor Color Code ject Objective: To

The percent of difference between the measured value and the given color code value of the 26 4. e rmine if the resistor’s p ch of the following c

27Series es tance in Series Circuits oject Objective: • To verify the series circuit resistance formula by making resistance measurements under va

28Curr Projecis the tems - El- Ju Make sSeries Circuits ent Flow in Series Circuits t Objective: • To verify that the current in a series cir

Introduction The purpose of this lab book is to provide hands-on experience to reinforce the electronic theory data learned in this course. Stude

29erVoltage in Series Circuits Projec• Items - El - Ju - Resi , 18 ake sure power supply is off when connecting meters or changing circuit compone

30 the voltage drop percentages of VA. If one of _____________ voltage, ________ voltage. 8. g the voltage divider formula. xx VT) V calculated

31eries Circuits ower in a Series Circuit roject Objective: • To demonstrate that power distribution in a series circuit is directly related t

32 conclusion, the total power in a series circuit equals the ____________________ of all 4. n two resistors in a series circuit is the same as the

33Series Detecting an Open in a Series Circuit Projec• en an open develops in a series circuit. • o prove that the applied voltage appears across

34 ________________ and the e ope resis____________________ to 4. oved from the circuit instead of R2. ______ 5. ______ __________________

35eries Circuits etecting a Short in a Series Circuit roject Objective: To provide experience with the changes that occur when a short develops

36Parallel Res Projec• t the total resistance in a parallel circuit is less than the least • Items - El- Jumper Wires - Resistors: 18k, 100k wer

377. if R2 were changed to 100k and R3 were hanged to 18k. T Calculated = _______________________. rocal, Calculated = _______________________

38arallel Circuits urrent Flow in Parallel Circuits roject Objective: • To verify that the amount of current through parallel branches is inve

3Equipment • Elenco XK-700 electrical trainer • Multi-range digital multi-meter (DMM) • Breadboard jumper wires • Testing jig (Used for trou

39h_____________ Did the total current c ange? If so, was the change in IT the same as the change in I2? _____________ This proves

40arallel Circuits oltage in Parallel Circuits roject Objective: • To verify that branch voltages are equal in a parallel circuit. • To verif

41 4. it. We will label rcuit v at when we add additional resistive branches to a parallel circuit, this Add a fourth parallel branc

42arallel Circuits ower in a Parallel Circuit roject Objective: • To verify that the power dissipation in a parallel branch is inverse to that

43____e resistor is of __________________ value. each branch current and calculating the individual power dissipations and cuit power. nged did it

44arallel Circuits etecting an Open in a Parallel Circuit roject Objective: • To provide experience with the change that occurs when an open d

45e whe 4. p 2, c e toP ____________ = _________________________ 5. 1 = arallel circuit becomes open, is the power dissipated by the oth

46arallel Circuits etecting a Short in a Parallel Circuit roject Objective: To provide experience with resistance changes that occur when a sho

47orted” branch increase or decrease? _________________ f circuit is shorted it appears that all the branches are shorted. he actual shorted elem

48ombination Circuits esistance in Series-Parallel Circuits roject Objective: To verify series and parallel resistance rules as they apply to s

4 DC Voltage Function Ranges from 200mV to 1000V DCAC Voltage Function Ranges from 200mV to 700V ACTransistor Test FunctionResistance Function Range

495. 6. d in step 5 and = . T mA VACalculate what the total resistance of the circuit would be if a 10k resistor (R5) were added in parallel to

50ombination Circuits urrent in Series-Parallel Circuits roject Objective: To better understand the characteristics of current flow in series-p

513. nts if dicate below whether each current will increase, decrease or stay the same will . I will ________________________. I6 will

52Combination Circuits Volt Projec• • Items - El- Ju Make s xpeage in Series-Parallel Circuits Objective: tTo better understand the character

53____ 4. with a 5. (largest branch, main line) _____________ ___________ components. Will V3 increase or decrease if R5 is replaced

54ombination Circuits ower in a Series-Parallel Circuit roject Objective: • To illustrate the power distribution characteristics of a combinat

55o lue in rcuit he component being considered. 4. of of the components is not important but N tice that this is not the largest r

56ombination Circuits etecting an open in a Series-Parallel Circuit roject Objective: • To demonstrate the effects of an open occurring in bot

57_________ _ voltage. ______________________________ ____ 5. Replace ming “open”. Measure the circuit voltages and ____. __ _ _________n

58 ombination Circuits etecting a short in a Series-Parallel Circuit roject Objective: • To demonstrate the effects of a short occurring in bo

6.00 AmA COM VΩ V Power Supply 6V Voltmeter leads connected in parallel with resistor being measured. Figure P-2Ammeter To measure curren

59 _____________ ________________ __________ compo________________________________________________ 5. emove the jumper wire and replace R .

60ircuit Troubleshooting Strategies he job of a technician frequently entails "troubleshooting" malfunctioning circuits. Good oubleshootin

61Just as an open in a circuit will act as an infinite amount of resistance, a short in a circuit will act as a resistance value of zero. Since a sm

If an ohmmeter were used to measure each resistive branch in 62moved from the circuit), the n in . What if the fault were in one of the other branc

circuit. This is because ohmmeters will ve branch connected in parallel. The circuit also ings because the circuit protection device will trip. a

64ing R3 or R4 is open. om the circuit, the result is a three resistance series cir uit that can easily be solved to determine IT With R remo

65 servations Conclusions ObDC Figure T-10 Turned switch ON – no light Definitely a problem in this circuit! M

66readboard Circuits ost electronics students gain hands-on experience with circuits by building them in temporary form on olderless breadboards. The

T 67 for each exercise. When finished with the exercises, design your own circuits and have a lab partner troubleshoot them. When designing a circ

68 Construct th ircuit on a readboard. Connect the testing jig according to the test points (TP’s) in the schematic dia Make sur u may refer to th

The Elenco XK-700 Electronic Trainer This guide will explain the basic operations and features of the Elenco electronic trainer that you will be usin

69roubleshooting Exercise 2 onstruct and troub wing circuit as in the previous exercise. Record your observations nd conclusions in the table below.

70roubleshootin xercise 3 servations an c nclusions below. ARNING: Do n mulate a nywhere in this circuit!T g E Construct and troubleshoot the follow

71roubleshooting Exercise 4 circuit. Record your observations and conclusions below. Observations Conclusions T Construct and troubleshoot the foll

72roubleshooting Exercise 5 onstru t and troubleshoot the following circuit. Record your observations and conclusions below. Observations Conclusi

73roubleshooting Exercise 6 it. Record your observations and conclusions below. Observations Conclusions T Construct and troubleshoot the following

74esign your own circuit here: Observations Conclusions D

75esign your own circuit here: Observations Conclusions D

76esign your own circuit here: Observations Conclusions D

77ormula Wheels F E P IE I R PRIEE x I E2RPRI2 x R PEER P x R I x RPIE2PP I2 E I

78otes: __________________________________________________________________________________________________________________________________________

Power Supply The Elenco trainer has several built in DC power supplies to satisfy most electronic design needs. The two variable DC power supplies

79___________________________________________________________________________________________________________________________________________________

80 Instructor Sign-off sheet Student Name: Project Number Project Name Instructor Initial Date Project 1 Voltmeters Project 2 Ammeters

8 The power supply section’s output terminal block also allows for the stepped down AC voltage to be used direct from the center tapped transformer