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Index 235

Ultrashort wave antenna amplifier circuit

Published:2011/5/2 9:06:00 Author:Christina | Keyword: Ultrashort wave, antenna, amplifier

The Ultrashort wave antenna amplifier circuit is as shown: (View)

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RF2320 linear general amplifier pin circuit

Published:2011/5/2 2:25:00 Author:Christina | Keyword: linear, general amplifier, pin circuit

RF2320 linear general amplifier pin circuit
The RF2320 is one kind of general-purpose, low-cost, high-efficiency linear RF amplifier IC, this device has the GaAs heterojunction bipolar transistor (HBT) treatment, and it is designed for the cascade 75Ω gain circuit (Value of noise is less than 2dB), in the range of 5～1000 MHz, the gain flatness is better than 0.5dB, high linearity makes this device can be used in the cable and TV applications. Also the RF2320 can be used in wireless voice and data communications products' IF and RF amplification, the band up to 2500MHz, the device itself contains the 75Ω, the input impedance and output impedance and it supplies the 2:1 VSWR (Voltage Standing Wave Ratio). The RF2320 CATV can be used in distribution amplifier, cable modem, broadband gain blocks, laser diode driver, reciprocating-channel amplifier, base station applications. And the RF2320 is in the square bat-winged SOP-16 package, the pin out is as shown in figure. (View)

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Transistor storage time test circuit

Published:2011/5/2 5:36:00 Author:Christina | Keyword: Transistor, storage time, test circuit

Transistor storage time test circuit
This circuit uses two pieces of CMOSCC4001. If the measure time and the storage time of T is less than the maximum allowable value, the green light turns on, this means qualified; the TS is too large, so the red light turns on, this means unqualified. Add the pulse to begin testing, point A's pulse width is about 50μS, during the test tube T conducted. Point B's pulse width is about 4μS, this is the T's maximum allowable storage time. If TS<4μS, the C will be 1 , RS flip-flop does not turn, so the red light turns on, green turns off. (View)

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Cathode output amp tube circuit

Published:2011/5/2 9:17:00 Author:Christina | Keyword: Cathode output, amp tube

Cathode output amp tube circuit

Features of this circuit are the cathode output and the autotransformer, the voltage amplifier stage is very special. This circuit intended to improve the control of amp tube, and to improve the sound clarity. (View)

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Suzuki GSX400F motorcycle decomposition circuit

Published:2011/5/2 18:41:00 Author:Christina | Keyword: Suzuki, motorcycle, decomposition

The Suzuki GSX400F motorcycle decomposition circuit is as shown: (View)

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CNC lathe test circuit

Published:2011/5/2 19:19:00 Author:Christina | Keyword: CNC, lathe test

CNC lathe test circuit
This circuit converts the X-axis's (or Y axis) rotation angle into the optical pulse, and then the photodiode 3DU52 converts the optical signal into electric signal, and outputs the pulse by GD plastic RC circuit to the counter, to achieve closed-loop control system. (View)

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Driver Circuit of Bridge Sensor

Published:2011/5/2 2:25:00 Author:Felicity | Keyword: Driver Circuit of Bridge Sensor,

The picture shows the driver circuit of bridge sensor. We can see that in this circuit A1 is the constant current output circuit where the constent value is determined by UZ(the steady voltage of VD1) and (R(RP1)+R2). It provides the patialvalue ofconstant currentto the bridge sensor(the bridge circuit consisting of RA-RD). The amplifier which consisting of A2-A4 can magnify the signals which was outputed by seneors to the level needed. (View)

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Current Control Circuit of Differential Amplifier

Published:2011/5/2 2:38:00 Author:Felicity | Keyword: Current Control Circuit of Differential Amplifier,

Current Control Circuit of Differential Amplifier
(View)

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Video amplification circuit composed of discrete device

Published:2011/4/29 4:29:00 Author:Rebekka | Keyword: discrete device, Video amplification

Video amplification circuit composed of discrete device. (View)

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Voice switch input amplification circuit diagram

Published:2011/4/29 1:27:00 Author:Rebekka | Keyword: Voice Switch, input amplification

Voice switch input amplification circuit diagram is shown as above. (View)

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RS232 serial port to RS485 conversion interface circuit diagram

Published:2011/4/29 3:12:00 Author:Rebekka | Keyword: conversion interface

RS232 serial port to RS485 conversion interface circuit diagram
RS232 to RS485 conversion interface circuit diagram designed by MAX485 chip is shown as above. (View)

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Portable DTMF electronics dialer circuit diagram

Published:2011/4/29 3:09:00 Author:Rebekka | Keyword: Portable DTMF , electronics dialer

Portable DTMF electronics dialer circuit diagram
DTMF dialer portable electronic circuit is shown as above. The portable electronic DTMF dialer circuit is composed of the two private number plate C1C9148 and other digital circuit. The electronic dialer mainly use two disc special circuit CIC9148, each plate number unit can store 19 phone numbers that one number has 16 numbers. Two circuits can store 38 numbers. (View)

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TA7550S audio amplifier integrated circuit

Published:2011/4/29 1:30:00 Author:TaoXi | Keyword: audio amplifier

TA7550S audio amplifier integrated circuit
The TA75550S is designed as one kind of audio amplifier integrated circuit which is produced by the TOSHIBA company, and it can be used in large screen and rear projection TV such as the Konka BT5O01 rear projection TV.etc. 1.Features The TA75550S has two-stage amplifier with the same functions. The two-stage op amp only supplies power to TA75550S, so the distortion is very small. 2.Pin functions and data The TA75550S is in the 9-pin single in-line package, and the pin functions and data is as shown in table 1. Table 1 The pin functions and data of TA75550S (View)

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Logarithmic amplification circuit

Published:2011/4/2 4:06:00 Author:may | Keyword: Logarithmic amplification

Logarithmic amplification circuit
Logarithmic amplification is show in the following picture: (View)

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Practical high speed logarithmic amplifier circuit

Published:2011/4/23 1:04:00 Author:May | Keyword: logarithmic amplifier

Practical high speed logarithmic amplifier circuit is shown in the following picture: (View)

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Logarithmic amplifier with temperature compensation circuit

Published:2011/4/23 1:04:00 Author:May | Keyword: logarithmic amplifier, temperature compensation

Logarithmic amplifier with temperature compensation circuit is shown in the following picture: (View)

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5.1-channel amplifier system circuit diagram

Published:2011/4/29 0:51:00 Author:Ecco | Keyword: 5.1-channel, amplifier system

5.1-channel amplifier system circuit diagram
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2450MHz final level high power linear amplifier circuit composed of RF2126

Published:2011/4/23 2:22:00 Author:May | Keyword: 2450MHz, final level, high power, linear amplifier

The picture is 2450MHz final level high power linear amplifier circuit composed of RF2126. Radio-frequency signal (RF) inputs by pin 1, and enlarge by power amplifier then output by pin 7 ( 5, 6, 8) . Pin 1 direct coupling with inside amplifier, so add a blocking coupling capacitance out of it. capacity of blocking coupling capacitance is 1.8~2.0μF, input resistance of pin 1 is 50Ω. The capacitance and inductance in the picture is the typical value when frequency is 2450MHz. (View)