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PENGAYUN. Masukan at. Keluaran au. PENGAYUN. # menukarkan isyarat AT kepada AU tanpa ada sumber luar # menjanakan sebarang nilai frekuensi yang diperlukan oleh litar. PENGUAT. keluaran. LITAR PENJANAAN FREKUENSI. SUAPBALIK. Rajah blok asas Pengayun. PENGUAT. PENGAYUN COLPITTS.

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Presentation Transcript
slide1

PENGAYUN

Masukan at

Keluaran au

PENGAYUN

# menukarkan isyarat AT kepada AU tanpa ada sumber luar

# menjanakan sebarang nilai frekuensi yang diperlukan oleh litar.

slide2

PENGUAT

keluaran

LITAR PENJANAAN FREKUENSI

SUAPBALIK

Rajah blok asas Pengayun

slide5

PENGUAT

PENGAYUN COLPITTS

RANGKAIAN SUABALIK

PENENTU FREK

slide7

PENGAYUN HARTELY

PENGUAT

RANG. SUABALIK

RANG. PENENTU FREK

slide9

PENGAYUN ARMSTRONG

PENGUAT

L2

PEN. FREK

SUABALIK

slide11

: Litar Setara Elektrik

SIMBOL

PENGAYUN HABLUR

slide12

Ia mempunyai dua frekuensi salun.

Frekuensi yang pertama dihasilkan oleh litar

siri R

-

L

-

C

. Frekuensi kedua berlaku apabila komponen siri sama dengan

h

h

h

reaktan, C

.

m

z

Salun Selari

Salun Siri

f

f

f

1

2

slide14

PENGAYUN GELOMBANG SEGIEMPAT

( MULTIVIBRATOR)

A

B

C

D

slide15

Q1 SATURATED

Q2 SATURATED

slide16

An astable multivibrator is also known as a FREE-RUNNING MULTIVIBRATOR. It is called free-running because it alternates between two different output voltage levels during the time it is on. The output remains at each voltage level for a definite period of time. If you looked at this output on an oscilloscope, you would see continuous square or rectangular waveforms. The astable multivibrator has two outputs, but NO inputs.

slide17

BEKALAN DIKENAKAN , ARUS MENGALIR KE Q1 DAN Q2 .ANGGAP Q1 AKAN BERKENDALI DAHULU DARIPADA Q2

  • Q1 PADA TAKAT TEPU TRANSISTOR BERKENDALI MANAKALA Q2 TAKAT POTONG.( TAK BERKENDALI).
  • C1 AKAN MENGECAS MELALUI R2 KEBUMI SEHINGGA VOLTAN PADA TITIK B MENJADI POSITIF.
  • VOLTAN POSITIF TITIK B AKAN MENYEBABKAN TAPAK Q2 MENDAPAT PINCANG DEPAN, Q2 BERKENDALI DAN TITIK C MENJADI 0 V DISEBABKAN C2 MENYAHCAS. Q1 TIDAK BERKENDALI.
  • SEMASA Q2 BERKENDALI C2 MENGECAS MELALUI R3 SEHINGGA VOLTAN PADA TITIK C MENJADI POSITIF.
  • VOLTAN TITIK C POSITIF MAKA TAPAK Q1 DIPINCANG DEPAN. Q1 BERKENDALI. VOLTAN TITIK B MENJADI 0V ,C1 MENYAHCAS.
  • KEADAAN SILIH GANTI