Amplifier Circuit

Double op-amp realization circuit diagram 1

Published:2011/8/19 1:04:00 Author:Jessie | Keyword: Double op-amp realization

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Single op-amp realization circuit diagram

Published:2011/8/19 2:04:00 Author:Jessie | Keyword: Single op-amp realization

If it uses the band-pass filter composed of the components with parameters being very closed, it is prone to oscillation. The resistor connected to should be selected in E-96 1% series, or you will destroy the oscillation conditions.   (View)

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TDA6103 video amplifier circuit diagram

Published:2011/10/14 3:14:00 Author:Ecco | Keyword: video amplifier

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The typical self-bias power amplifier stage circuit of tube

Published:2011/10/14 1:48:00 Author:Ecco | Keyword: self-bias , power amplifier , tube

The typical self-bias power amplifier stage circuit withoutdebugging of tube The typical semi-debugself-bias power amplifier stage circuit of tube   (View)

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TDA6107 video amplifier circuit diagram

Published:2011/10/14 2:11:00 Author:Ecco | Keyword: video amplifier

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A short-wave signal amplifier circuit diagram

Published:2011/10/14 2:21:00 Author:Ecco | Keyword: short-wave signal amplifier

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Broadband short-wave amplification circuit diagram

Published:2011/10/14 2:12:00 Author:Ecco | Keyword: Broadband short-wave amplification

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Short-wave signal amplifier circuit diagram

Published:2011/10/14 2:13:00 Author:Ecco | Keyword: Short-wave signal amplifier

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Low-noise amplifier circuit diagram

Published:2011/10/16 22:33:00 Author:Ecco | Keyword: Low-noise amplifier

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Differential amplifier circuit diagram

Published:2011/10/17 1:13:00 Author:Ecco | Keyword: Differential amplifier

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Common TDA6108 video amplifier circuit

Published:2011/10/14 3:12:00 Author:Ecco | Keyword: Common video amplifier

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TDA5112 video amplifier circuit diagram

Published:2011/10/14 2:24:00 Author:Ecco | Keyword: video amplifier

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JFET gate grounding preamplifier circuit diagram

Published:2011/9/15 1:38:00 Author:Rebekka | Keyword: JFET gate grounding preamplifier

Figure 1-1 is the example of joint types FET 2SK125(SONY) grounded gate amplifier. So when you use the gate grounding circuit, you could separate the input and output by using the grounding gate electrode on printing copper foil. The power gain of the circuit is about 10~12dB, NF is about 2dB. The LC value in the circuit change with frequency. You should choose table 1-1, and L1, L2 are at toroidal core amine line of poly resin. The diameter is about 0.3mm. It should insert in the substrate directly to avoid producing stray capacitance. You could Adding a source of resistor where you want to adjust and keep the drain current being about 10mA. In addition, adjusting trimmer condenser can get the highest sensitivity.   (View)

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1M ~ 50MHZ 1W broadband power amplifier circuit diagram

Published:2011/9/15 1:35:00 Author:Rebekka | Keyword: broadband power amplifier

The picture shows the 1W wide-broadband power amplifier with frequency in 1 ~ 50MHz and using ２ＳＣ１９７０; Input and output coils use broadband transformer composed of toroidal winding for impedance conversion. 2SC1970 is the 170MHz power transistor, so it can be used for the VHF band broadband amplifier. In the circuit , the coupling capacitor (CoupIingCapacitor) and Bypass Capacitor are connected with 2 to 3 0.01μF ceramic capacitor in parallel, the most important thingis to reduce the impedance (Impedance), at the same time, the current flows the channel is also wider.   (View)

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10M-1200MHZ and μPC1651G broadband amplifier circuit diagram

Published:2011/9/14 21:41:00 Author:Rebekka | Keyword: broadband amplifier circuit

μPC1651G(Japanese electrical apparatus) series use high-frequency broadband amplifier. Micro-disc shape(Micro Disk Type). Frequency coverage is 10M～1200MHz(@－3dB), and the gain is 19dB(@f＝500MHz). NF is about 5dB, so it's not good to use receiver preamplifier. But there is not much effect on using receiver preamplifier and IF amplifying circuit. Figure 1 is broadband preamplifier composed of μPC1651G. Although it has a simple structure, you should pay attention to the effect of lead inductance when youwant to get1200MHz, so it is better to use short wiring. The circuit cases use broadband amplifier composed of glass epoxy double-sided substrate. The bypass capasitor of power terminal should be connected between IC power supply and ground. It should be near to IC.   (View)

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Operational amplifier general zero setting method circuit diagram

Published:2011/9/26 21:21:00 Author:Rebekka | Keyword: Operational amplifier , zero setting method

The figure shows a simple common zero seting circuit. Its integrated chip can be used for the OPA37, LH0044B and so on. As the adjustment of the network (R1, R2 and R3 form a potentiometer) uses the 15V positive and negative power supply, almost any amplifier is suitablefor zero seting. ①, ⑧ pins are zero ends. The resistors R1 and R2 are high-value resistors. It is usually taken to be 5MΩ for the LH0044B. It only has a few microamps of current and plus an adjustable voltage on R2, so that the two currents are imbalance and adjust the offset voltage.   (View)

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Microphone amplifier circuit diagram

Published:2011/8/3 2:33:00 Author:Ecco | Keyword: Microphone amplifier

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In-phase composite DC amplifier circuit diagram

Published:2011/9/19 1:16:00 Author:Ecco | Keyword: In-phase , composite DC amplifier

It uses the four operational amplifier 774 to achieve its parallel work, andit can drive 500Ω loads with goodlinear in the ± 10V range.   (View)

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Power amplifier circuit of Marantz electronic valve 8

Published:2011/9/25 22:11:00 Author:Ecco | Keyword: Power amplifier , Marantz, electronic valve

Whole frequency response rangeis relatively flat from 10Hz to 40Hz.   (View)

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Tube SRPP inverter circuit

Published:2011/9/25 22:17:00 Author:Ecco | Keyword: Tube SRPP inverter

SRPP tube common-cathode inverter circuit: Tube SRPP common-gateinvertercircuit:   (View)

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