tag:blogger.com,1999:blog-84380296567029315972026-06-04T23:00:11.048+07:00ElectroStudyStudy and learn about electricity, basic electronic, circuit, wiring diagram, example and equationKang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.comBlogger117125tag:blogger.com,1999:blog-8438029656702931597.post-78374282593639888112025-02-02T20:27:00.003+07:002025-09-11T08:41:34.875+07:00Hexadecimal fractions to decimal numbersThis post is explain how to convert hexadecimal fractions to decimal numbers. As we known, hexadecimal number is system number who have 16 digit numbers, which is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, where:
A present of 10
B present of 11
C present of 12
D present of 13
E present of 14
F present of 15.
The picture below is show hexadecimal fraction to decimal, form 1st position to Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-12595504875071293732021-01-31T20:29:00.004+07:002025-09-11T08:45:21.836+07:00Table of the electric currents of a 3-phase motorAn electric motor has specifications: voltage is 380 V, 3 phase, frequency is 50 Hz, 1500 rpm, cos phi is 0.8 and real power on the name plate is 22 kW. Convert to HP (Horse Power) and calculate, how many current of electricity will flow into the motor?
Connection of 3-Phase Motor
:catat: Answer:
1HP = 0.75 kW
--> 22 kW / 0.75 kW x 1 HP = 29.33 HP
--> 22 kW ≈ 30 HP
:catat: The power of Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-55771127612181461342021-01-20T09:06:00.003+07:002025-09-11T08:46:49.037+07:00Octal fractions to decimal numbersThis post is explain how to convert octal fractions to decimal numbers. The picture below is show octal fraction to decimal, form 1st position to 5th position of the digit, before and after the octal point.
Octal fractions to decimal
Example 1:
Convert Octal number 0.725 to decimal number
Completion:
0.725 (8) = ... (10)
1st digit after octal point: 7 → 7 × (1/ 81) = 7 × 0.125 = 0.875
2nd digitKang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-79276225258599310762021-01-19T15:50:00.003+07:002025-09-11T08:47:25.602+07:00Binary fractions to decimal numbersThis post is explain how to convert binary fractions to decimal numbers. The picture below is show binary fraction to decimal, form 1st position to 5th position of the digit, before and after the binary point.
Binary fractions to decimal
Example 1:
Convert binary number 0.1101 to decimal number
Completion:
0.101 (2) = ... (10)
1st digit after binary point: 1 → 1 × (1/ 21) = 1 × 0.5 = 0.5
2nd Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-85162854230981381872019-02-26T16:52:00.003+07:002025-09-11T08:48:38.858+07:00How to turn on the led of arduino?How to turn on the led of arduino, which is call the led pin?
At the picture above, the led pin is marked as L and to turn it on is very easy, just
upload the sketchbellow. If you success to upload the code (sketch), the led pin will turn on for 1 second, then turn off for 1 second, and roll it over again and again.
/****************************************/
/* ARDUINO SKETCH (1): BLINK, Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-60324811546034392232017-04-02T11:28:00.003+07:002025-09-11T08:50:53.772+07:00Data Sample of Single Phase MotorWe have four articles that used to calculate current, cos phi, HP and power of single phase motor. Now, we want to collect them, embrace the result of them, then rewrite them in this article, to be Data Sample of Single Phase Motor. I hope it will be usefull :hahaha:
Data Sample of Single Phase Motor
Voltage - Frequency - Power - Cos Phi - Current
110V - 60Hz - 272.25W - 0.75 - 3.3A
200V - Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-9863802774646481882017-03-31T05:30:00.003+07:002025-09-11T08:52:51.041+07:00How to calculate current motor value in single phase motor?:1: There is an electric motor that used to drive conveyor machine. The electric motor has specifications: voltage is 200 Volt single phase, frequency is 50 Hz, cos phi is 0.82 and real power on the name plate is 330 Watt. How many current of electricity will flow into the motor?
:catat: Answer:
V = 200 Volt
f = 50 Hz
Cos phi = 0.82
P = 330 W
I = ...?
===================================
The Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-19565556103795848442017-03-30T05:00:00.003+07:002025-02-02T20:16:00.441+07:00How to calculate cos phi motor value in single phase motor?:1: We have an electric motor that used to drive washing machine. The electric motor has specifications: voltage is 220 Volt single phase, frequency is 50 Hz, current of electricity is 1.24 Ampere and real power on the name plate is 200 Watt. How many cos phi of electricity of the motor?
:catat: Answer:
V = 220 Volt
f = 50 Hz
I = 1.24 A
P = 200 W
Cos phi = ...?
=================================Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-34265033044107835342017-03-29T09:45:00.004+07:002025-09-11T08:55:54.512+07:00How to calculate power motor value in kW to HP?:1: There is an electric motor that used to drive water pump machine. The electric motor has specification: voltage 220 Volt single phase, frequency 50 Hz, current 9 Ampere and power 1.2 kW. How many horse power or HP power of electricity that used the motor?
:catat: Answer:
V = 220 Volt
f = 50 Hz
I = 9 A
P = 1.2 kW
P = ...? HP
====================================
The conversion formula of kW Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-8722651681910767082017-03-28T18:00:00.004+07:002025-09-11T08:56:42.442+07:00How to calculate power motor value in single phase motor?:1: We have an electric motor that used to drive fan machine. The electric motor has specification: voltage 220 Volt single phase, frequency 50 Hz, current 0.5 Ampere and cos phi 0.6. How many power of electric that used the motor?
:catat: Answer:
V = 220 Volt
f = 50 Hz
I = 0.5 A
Cos phi = 0.6
P = ... ?
P = V I Cos phi
P = 220 * 0.5 * 0.6
P = 66 Watt.
:2: The electric motor has specification:Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-66025550635237323882015-11-21T14:53:00.003+07:002025-09-11T08:57:32.374+07:00Wiring diagram 3 phase motor 3.3 kW with three unit of BSH 222 switchWe will use three unit of BSH 222 switch for control a motor glue pump. The glue must distribute to three different location, such us Line1, Line2 and Line3. Each switch store in each Line location.
Wiring diagram 3 phase motor 3.3 kW with three unit of BSH 222 switch
Electric parts needed for the wiring 3 Phase motor 3.3 kW with three unit of BSH 222 switch above:B1 = MCB 15A 3 phase
M1 = Motor Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-9068407189997638242015-11-05T17:51:00.004+07:002025-09-11T08:58:02.989+07:00BSH 222 SwitchBSH 222 is a Type of Push Button SwitchKasuga BSH 222 is a type of push button switch, which has an ON button and an OFF button in one switch. ON button BSH 222 marked with black color, position above OFF button. OFF button BSH 222 marked with red color, position below ON button.
BSH 222
PTM and PTBON button in a BSH 222 switch is type of PTM (push to make) non latching. OFF button in a BSH Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-25378888810082085292015-10-29T20:32:00.006+07:002025-09-11T08:58:40.246+07:00Wiring diagram 3 phase motor 2.2 kW with stop series connectionIn most industrial system control machine, there's a start switch and there' re a lot of stop switch. Start switch location is on the panel operator. Stop switches location are on the control box, in each unit of the machine. Stop switch connection in wiring diagram are series connections.
Wiring diagram 3 Phase motor 2.2 kW with stop series connection
Electric parts needed for the wiring 3 Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-28255624370947689602015-10-22T20:28:00.004+07:002025-09-11T08:59:40.948+07:00Wiring diagram single motor with Start - Stop switchBasic control motor, to get start or stop the motor, use a push button switch as a trigger a motor. Push To Make / PTM switch use to start the motor and Push To Brake / PTB switch use to stop the motor.
Wiring diagram single motor with Start - Stop switch
Electric parts needed for the wiring above:
B1 = MCB 5A 3 phase
M1 = Motor 1.5kW 380V 3Phase
#1 = Magnetic contactor 220VAC
TOR = Thermal Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com1tag:blogger.com,1999:blog-8438029656702931597.post-79545095714517371602015-10-20T17:02:00.005+07:002025-09-11T09:00:48.181+07:00Wiring diagram single motor with selector switchBasic control motor, to get start or stop the motor, only use a selector switch as a trigger a motor.
Wiring diagram single motor with selector switch
Electric parts needed for the wiring above:
B1 = MCB 5A 3 phase
M1 = Motor 0.75kW 380V 3Phase
#1 = Magnetic contactor 220VAC
TOR = Thermal Overload Relay 1.4A
S1 = Selector Switch
L3 = Pilot lamp 220VAC
Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com1tag:blogger.com,1999:blog-8438029656702931597.post-29651102386074226182015-08-06T16:11:00.004+07:002025-09-11T09:01:31.064+07:00Hexadecimal number system 1 - 100Hexadecimal number system is numeral system with a base of 16. Represents numeric values using sixteen symbols, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.
Table below is hexadecimal number from 1 to 64, equivalent of 1 to 100 in decimal number.
HexadecimalDecimalHexadecimalDecimal
113351
223452
333553
443654
553755
663856
773957
883A58
993B59
A103C60
B113D61
C123E62
D133F63
E144064
Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com1tag:blogger.com,1999:blog-8438029656702931597.post-44926375069200561172015-07-24T20:14:00.005+07:002025-09-11T09:02:07.172+07:00Octal number system 1 - 100Octal number system is numeral system with a base of 8. Represents numeric values using eight symbols, 0, 1, 2, 3, 4, 5, 6 and 7. There is no 8 or 9 in octal number system.
Table below is octal number from 1 to 144, equivalent of 1 to 100 in decimal number.
OctalDecimalOctalDecimal
116351
226452
336553
446654
556755
667056
777157
1087258
1197359
12107460
13117561
14127662
15137763
161410064
Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-58908050260643321092015-07-13T23:20:00.004+07:002025-09-11T09:02:38.910+07:00Binary number system 1 - 100Binary number system is numeral system with a base of 2. Represents numeric values using two symbols, 0 and 1. There is no 2,3,4,5,6,7,8 or 9 in binary number system.
Table below is binary number from 1 to 1100100, equivalent of 1 to 100 in decimal number.
Binary DecimalBinaryDecimal
1111001151
10211010052
11311010153
100411011054
101511011155
110611100056
111711100157
1000811101058
Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com1tag:blogger.com,1999:blog-8438029656702931597.post-53471237462842163362015-07-09T20:49:00.004+07:002025-09-11T09:03:16.230+07:00Hexadecimal numbers to octal numbersConvert hexadecimal numbers to octal numbers
1. F4
2. ADE
3. 8C1F
Completion:
1. F4 (16) = ? (8)
* First, convert hexadecimal numbers to decimal numbers. Then, convert decimal numbers to octal numbers.
hexadecimal to decimal
F4 = 4x160 + Fx161
F4 = 4x160 + 15x161
F4 = 4 + 240
F4 (16) = 244 (10)
decimal to octal
244 / 8 = 30, remains 4
30 / 8 = 3, remains 6
3 / 8 = 0, remains 3
244 (10) = 364 (Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com1tag:blogger.com,1999:blog-8438029656702931597.post-6874174436245280042015-07-07T22:22:00.004+07:002025-09-11T09:03:45.459+07:00Hexadecimal numbers to binary numbersConvert hexadecimal numbers to binary numbers
1. 2B
2. DAD
3. FE01
Completion:
1. 2B (16) = ? (2)
* First, convert hexadecimal numbers to decimal numbers. Then, convert decimal numbers to binary numbers.
hexadecimal to decimal
2B = Bx160 + 2x161
2B = 11x160 + 2x161
2B = 11 + 32
2B (16) = 43 (10)
decimal to binary
43 / 2 = 21, remains 1
21 / 2 = 10, remains 1
10 / 2 = 5, remains 0
5 / 2 = 2, Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-17682739522926262542015-07-03T21:16:00.003+07:002025-09-11T09:05:15.228+07:00Octal numbers to hexadecimal numbersConvert octal numbers to hexadecimal numbers
1. 73
2. 305
3. 5431
Completion:
1. 73 (8) = ? (16)
* First, convert octal numbers to decimal numbers. Then, convert decimal numbers to hexadecimal numbers.
octal to decimal
73 = 3x80 + 7x81
73 = 3 + 56
73 (8) = 59 (10)
decimal to hexadecimal
59 / 16 = 3, remains 11 or B
3 / 16 = 0, remains 3
59 (10) = 3B (16)
73 octal number equal to 3B Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-38823847768895266232015-07-01T21:10:00.003+07:002025-09-11T09:05:50.547+07:00Octal numbers to binary numbersConvert octal numbers to binary numbers
1. 45
2. 700
3. 2021
Completion:
1. 45 (8) = ? (2)
* First, convert octal numbers to decimal numbers. Then, convert decimal numbers to binary numbers.
octal to decimal
45 = 5x80 + 4x81
45 = 5 + 32
45 (8) = 37 (10)
decimal to binary
37 / 2 = 18, remains 1
18 / 2 = 9, remains 0
9 / 2 = 4, remains 1
4 / 2 = 2, remains 0
2 / 2 = 1, remains 0
1 / 2 = 0, Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-59235636796563153552015-06-18T09:24:00.005+07:002025-09-11T09:06:24.910+07:00Binary numbers to hexadecimal numbersConvert binary numbers to hexadecimal numbers
1. 11111
2. 1101110
3. 1110101010
Completion:
1. 11111 (2) = ? (16)
* First, convert binary numbers to decimal numbers. Then, convert decimal numbers to hexadecimal numbers.
binary to decimal
11111 = 1x20 + 1x21 + 1x22 + 1x23 + 1x24
11111 = 1 + 2 + 4 + 8 + 16
11111 (2) = 31 (10)
decimal to hexadecimal
31 / 16 = 1, remains 15 or F
1 / 16 = 0, Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-72928349912890692472015-06-16T22:54:00.005+07:002025-09-11T09:07:05.117+07:00Binary numbers to octal numbersConvert binary numbers to octal numbers
1. 11101
2. 1001111
3. 1010101010
Completion:
1. 11101 (2) = ? (8)
* First, convert binary numbers to decimal numbers. Then, convert decimal numbers to octal numbers.
binary to decimal
11101 = 1x20 + 0x21 + 1x22 + 1x23 + 1x24
11101 = 1 + 0 + 4 + 8 + 16
11101 (2) = 29 (10)
decimal to octal
29 / 8 = 3, remains 5
3 / 8 = 0, remains 3
29 (10) = 35 (8)
Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0tag:blogger.com,1999:blog-8438029656702931597.post-50657224634995504702015-06-14T20:21:00.003+07:002025-09-11T09:07:45.473+07:00Decimal numbers to hexadecimal numbersConvert decimal numbers to hexadecimal numbers
1. 128
2. 2015
3. 300000
Completion:
1. 128 (10) = ? (16)
→ 128 / 16 = 8, remains 0
→ 8 / 16 = 0, remains 8
* Finish when meet zero (0) and then write remains numbers, from bottom to top.
128 decimal number equal to 80 hexadecimal number
128 (10) = 80 (16)
2. 2015 (10) = ? (16)
2015 / 16 = 125, remains 15 or F
125 / 16 = 7, remains 13 or D
7 / 16 =Kang Caanghttp://www.blogger.com/profile/18366591671481735377noreply@blogger.com0