로그인회원등록 내글장바구니주문조회현재접속자
 상품 검색








 게시판 검색





 
 
회원등록 비번분실


온라인 입금계좌
ㆍ기업은행
ㆍ219-043192-01-028
ㆍ이건영

      거래은행 바로가기
 
 Sensor Applications
센서 자료실
작성자 leeky        
작성일 2006/02/13
첨부#2 40m_10w_tx_asy.jpg (0KB) (Down:29)
Link#1 (Down:69)
ㆍ추천: 0  ㆍ조회: 539   
  IRF510을 사용한 7MHz 출력10W 증폭기, PLL

This is a very interesting transmitter from MicroHobby Lab. Reference
.
MICROHOBBY Nº2 Transmisor excitador de 10W CLASE E
The output stages in 74HCxxx devices are designed to
have equal pull-up and pull-down transistors.
This minimises even-order harmonics, simplifying the rig's output filtering.
The 74HC240 can directly drive a power MOSFET amplifier (IRF510).
.
MICROHOBBY Nº1 Preamplificador ecualizador. http://www.qsl.net/lu8eha/lab_ref1.html
 
.
XTAL = Cristal de Frecuencia Fundamental
IC1 = Requiere pequeña aleta disipadora
SINT = Entrada de oscilador externo requiere 0 / 8V de pico
CH1 = 30 espiras de alambre 0.25 sobre ferrite de 6 mm de O
L1 = ajustar para que de 10 W de salida con 12 VAC y 1Amper
C1, C2, C3 = Mica Plateada > de 100V

IRF510 송신기는 E급으로 효율이 90%이다.
 
.
DATA SHEET: IRF510 POWER MOSFET TRANSISTOR
Manufactured by Harris Semiconductors
Available at most Radio Shacks (although incorrectly labeled "IFR510")
Cost: $1.99 at Radio Shack (Cat. No. 276-2072)
.
DESCRIPTION.
The IRF510, IRF511, IRF512 and IRF513 are n-channel enhancement-mode
silicon-gate power field-effect transistors.
These power MOSFET's are designed for applications such as
switching regulators, motor drivers, relay drivers, and drivers
for high-power bipolar switching transistors requiring high speed and low gate-drive power.
These types can be driven directly from integrated circuits.
.
MAXIMUM RATINGS IRF510 IRF511 IRF512
----------------------------------------------------------------------------
Vds Drain-source voltage 100v 80v 100v
Vdgr Drain-gate voltage 100v 80v 100v Rgs=20K
Vgs Gate-source voltage +/-20v +/-20v +/-20v
Id Continuous drain current 5.6A 5.6A 4.9A
.
ELECTRICAL CHARACTERISTICS (All types unless otherwise stated)
----------------------------------------------------------------------------
Igss Gate-source leakage 500nA (forward) -500nA (reverse)
Idss Drain current, Vg=0v 250uA
Id-on On state drain current 5.6A IFR510, IFR511
4.9A IFR512, IFR513
Rds-on Drain-source "on" Res. 0.4-0.54 ohms (device ON resistance)
Cis Input capacitance 135pF (at Vds=12v, Cis=180pF)
Cos Output capacitance 80pF (at Vds=12v, Cos=130pF)
Td-on Turn-on delay time 8-11nS ) These parameters define
Tr Rise time 25-36nS ) how fast the MOSFET turns
Td-off Turn-off delay time 15-21nS ) on and off when gate is
Tf Fall time 12-21nS ) driven with a square wave

Vsd Diode forward voltage 2.5v (dropped across the source-drain
due to the internal diode)

SOME DATA FROM THE PERFORMANCE CURVES
Output drain current (Id) vs. gate-source voltage (Vgs) at Vd=+12v
Vgs=4v Id= 0A
Vgs=5v Id= 1A
Vgs=6v Id= 2.8A
Vgs=7v Id= 4.8A
Vgs=8v Id= 6.8A
.
NOTE: Therefore, for a 5W QRP power amplifier, the gate-source voltage should not exceed 5-6v;
otherwise excessive current will attempt to flow.
A continuous applied Vgs >7.5v will cause Id to exceed the maximum drain current rating of 5.6A (IRF510).
This will cause "catastrophic substrate failure" (commonly known as smoke!).
.
What is the maximum frequency? Max. frequency is not specified,
but since Tr= 36nS (rise time) and Tf = 21nS (fall time),
a total device delay of 57nS occurs, worse case. f=1/t = 1/57nS = 17.5 MHz.
Total "typical" device delay is 25+12ns= 37nS for f= 27 MHz.
This does not take into account L/C loading of the output filter, etc.,
which will lower the maximum frequency which the MOSFET will toggle on and off.
GL de Paul NA5N
.
IRF510 MOSFET
For a 5-15 watt transmitter, the IRF510 is a pretty good choice.
Its Drain-source breakdown voltage is 100V which gives a reasonable amount of headroom.
(on mod peaks the supply voltage will be 24V , assuming a 12V powersource.
The RF voltage on the FET will be something more than 2 times
that, say peak voltage of 60-70 Volts.
.
The input capcitance of the IRF510 is quite low (Ciss ~= 150PF)
which makes it easy(er) to drive than larger mosfets with higher gate capacitance.
Why not try to get more out of the IRF510? The problem is Rds - the on Resistance, which is 0.4 ohms for the IRF510.
The output impedance seen by the FET is roughly V*V/2P where V is DC supply voltage and P = power out.
If P = 10 and V=12 then the output impedance is about 12*12/2*10 = 7.2 Ohms
If P = 20 and V=12 then the output impedance is about 12*12/2*20 = 3.6 Ohms
As the value of Rds gets larger relative to the output impedance the efficciency drops
and you stat producing more heat and less RF.
.
At the small end of the scale, you could try MTP3055Es.
They are tested at 7 Mhz, but they are gate capacitance is about 3 times that of the IRF510,
and thier breakdown voltage is rated at 60 Watts.
If you can drive them you may be able to get more out than an IRF510,
assuming you adjust the output network ...
.
MICROHOBBY Nº3 Modulador clase A http://www.qsl.net/lu8eha/lab_ref3.html
 
MICROHOBBY Nº4 Sintetizador. http://www.qsl.net/lu8eha/lab_ref4.html
 

예 1: 3625 kHz = 3200 + 320 + 80 + 20 + 5
예 2: 7255 kHz = 6400 + 640 + 160 + 40 + 10 + 5
   
윗글 Helical Antenna Design Software
아래글 MC34063A 설계용 계산기
    N         제목    글쓴이 작성일 조회 추천
74 AT89C2051과 EM4095를 사용한 RFID 장치의 제작 leeky 2006/12/31 (일) 1230 0
73 UserPort for Windows 2000 leeky 2007/11/12 (월) 859 0
72 아날로그 PID 제어 회로 leeky 2007/11/12 (월) 1445 0
71 Windows Scope 2K4 leeky 2007/11/12 (월) 991 0
70 12C508 금속검출기 leeky 2006/02/24 (금) 1155 0
69 16C84 LCD표시 L,C 메터 leeky 2006/02/25 (토) 1199 2
68 89C2051 LCD표시 LC메터의 제작 leeky 2006/02/14 (화) 1220 8
67 12C508A 초음파 거리 측정기 avrtools 2006/02/23 (목) 1095 0
66 Caliper to computer (RS-232) interface leeky 2006/02/23 (목) 1126 4
65 가속도센서 ADXL202의 PIC12C508 인터페이스 leeky 2006/02/20 (월) 1084 2
64 16F84 광학식 심박측정기 leeky 2006/02/27 (월) 1162 6
63 12C508 전자 나침판 leeky 2006/02/27 (월) 759 0
62 ENC28J60 Ethernet to SPI Header Board leeky 2007/03/26 (월) 1028 0
61 SHT11 습도센서 8051 인터페이스 leeky 2006/02/14 (화) 1083 0
60 SHT11 습도센서 SX18 인터페이스 leeky 2006/03/16 (목) 729 2
59 SRF04 초음파 거리센서의 제작 leeky 2006/02/25 (토) 772 0
58 Ambient Light Sensors TSL2550 avrtools 2006/04/06 (목) 755 0
57 PIC16F877A BioSense Physiologic Sensing leeky 2006/04/06 (목) 652 0
56 Electrocardiogram (ECG) Front End leeky 2006/04/06 (목) 718 0
55 Biometric Interface Board leeky 2006/04/06 (목) 838 0
54 MAX2242 802.11b 블루투스 RF증폭기 leeky 2006/04/06 (목) 534 0
53 AX.25 9600BPS 무선모뎀 L2PCX leeky 2006/04/06 (목) 424 0
52 TCS230 색상검출 평가키트 leeky 2006/04/06 (목) 1706 0
51 100V10A 50W 전자부하 leeky 2006/04/06 (목) 618 0
50 FLAME SENSOR UVTRON R2868 leeky 2006/04/06 (목) 604 0
49 Compact Optical Image Scanner leeky 2006/04/06 (목) 542 0
48 지자기 방위계 모듈 CMPS03 leeky 2006/04/06 (목) 700 0
47 0~1.5KV 정전기 측정센서 PKE05A1 leeky 2006/04/06 (목) 381 0
46 Rain Sensor 인터페이스 회로 leeky 2006/04/06 (목) 610 0
45 초음파 감지 센서 leeky 2006/04/06 (목) 615 0
44 HUMIDITY SENSOR HS-1100 leeky 2006/04/06 (목) 482 0
43 Relative Humidity Sensor KSH01, KSH-02 leeky 2006/04/06 (목) 371 0
42 Digital Radar Speedometer leeky 2006/04/06 (목) 539 0
41 Touch Sensitive Switch leeky 2006/04/06 (목) 579 0
40 Economy radar detector leeky 2006/04/06 (목) 415 0
39 Twin Loop metal detector leeky 2006/04/06 (목) 548 0
38 Proximity Detector CS209A/D leeky 2006/04/06 (목) 538 0
37 Lego Sound Sensor leeky 2006/04/06 (목) 486 0
36 12C508 IR Proximity Detector leeky 2006/04/06 (목) 700 0
35 Sharp IR Sensor Hack leeky 2006/04/06 (목) 673 0
34 TIL300 PRECISION LINEAR OPTOCOUPLER leeky 2006/04/06 (목) 427 0
33 Analog Opto Isolator leeky 2006/04/06 (목) 472 0
32 Rich Caudle's capaciflector leeky 2006/04/06 (목) 317 0
31 Geiger Tube leeky 2006/04/06 (목) 424 0
30 Lynxmotion Infrared Proximity Detector leeky 2006/04/06 (목) 403 0
29 Low Power LED Flasher leeky 2006/04/06 (목) 478 0
28 백색 LED BLU 구동회로 leeky 2006/04/06 (목) 513 0
27 저전압 백색 LED 구동회로 leeky 2006/04/06 (목) 547 0
26 IR LED 송신회로 avrtools 2006/04/06 (목) 562 0
25 LED 총방사 광량의 측정 leeky 2006/04/06 (목) 444 0
24 자외선 측정센서의 교정 leeky 2006/04/06 (목) 398 0
23 UV센서 S9050의 데이터 leeky 2006/04/06 (목) 312 0
22 디지털 자외선 메터 leeky 2006/04/06 (목) 362 0
21 Simple Metal Detector leeky 2006/04/06 (목) 550 0
20 DS1820 온도센서 읽기 leeky 2006/04/04 (화) 622 0
19 RC5 적외선 리모콘의 신호처리 leeky 2006/02/17 (금) 701 0
18 NEC 적외선 리모콘의 전송규격 leeky 2006/02/17 (금) 613 0
17 MBI-6001 TRANSLESS LED DRIVER leeky 2006/02/14 (화) 429 0
16 PC로 제어하는 AD9850 DDS 신호발생기 leeky 2006/02/14 (화) 473 0
15 2400 Mhz test oscillator leeky 2006/02/14 (화) 496 0
14 DC BRUSHLESS FANS leeky 2006/02/14 (화) 581 0
13 RF mW Meter for SHF (2300MHz) leeky 2006/02/14 (화) 408 0
12 FET로 만드는 400W SSR leeky 2006/02/14 (화) 641 0
11 Scope2k4 소프트웨어 및 하드웨어 회로 leeky 2006/02/14 (화) 767 0
10 LTC1298를 사용한 PC 병렬포트용 ADC leeky 2006/02/14 (화) 432 0
9 0~14V 가변정전압, 0~2A 가변정전류 전원 avrtools 2006/02/14 (화) 557 0
8 ATV 1240-1300MHz 튜너용 PLL leeky 2006/02/14 (화) 308 0
7 1 Transistor FM Microphone leeky 2006/02/14 (화) 362 0
6 Helical Antenna Design Software leeky 2006/02/13 (월) 467 0
5 IRF510을 사용한 7MHz 출력10W 증폭기, PLL leeky 2006/02/13 (월) 539 0
4 MC34063A 설계용 계산기 avrtools 2006/02/13 (월) 500 0
3 RS232 신호 변환회로 leeky 2006/02/13 (월) 652 0
2 Sound card based multimeter Scope leeky 2006/02/13 (월) 786 0
1 2400MHz Helical Antenna Design leeky 2006/02/08 (수) 437 0
1

바구니 : 0
 보관함 : 0
오늘뷰 : 0
HOME   |   회사소개   |   제휴안내   |   회사위치   |   서비스이용 약관   |   개인정보 보호정책   |   사이트맵
17015 경기도 용인시 기흥구 동백중앙로16번길 16-25, 508호. 전화 : 031-282-3310
사업자 등록번호 : 697-47-00075 / 대표 : 이건영 / 업태 : 제조업 / 종목 : LED조명, LED전원, 제어장치.
개인정보 관리책임자 : 홈페이지 관리자 . Copyright ⓒ2016 아크레즈 (ACLEDS INC.)
HOME TOP PREVNEXT 0 0 0