Showing posts with label circuit. Show all posts
Showing posts with label circuit. Show all posts
5/09/2013

Solar Minty, DHT22 , Waterproof DS18B20 , PH Probe

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This is a work in progress project which uses a Solar charging MintyBoost to power an Arduino with a Proto Screw Shield on it. Attached is a...

PT4115 continuous conduction mode inductive step-down converter

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The PT4115 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LED ...
5/08/2013

Digital voltmeter using ICL7107

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The circuit given here is of a very useful and accurate digital voltmeter with LED display using the ICL7107 from Intersil. The ICL7107 is ...
5/07/2013

EPC2LC20 Configuration Device

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The EPC2LC20 is a Configuration Device which is designed for SRAM-Based LUT Devices. EPC2LC20 absolute maximum ratings: (1)Supply voltage...
5/06/2013

AD603AR low noise, voltage-controlled amplifier

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The AD603AR is a low noise, voltage-controlled amplifier for use in RF and IF AGC systems. The AD603AR provides accurate, pin selectable ...
5/01/2013

Measuring and Test Circuit 2N7002

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                                    2N7002 Constant off-time switching regulators offer several advantages over constant-frequency desig...
4/27/2013

LM393N integrated Circuits (ICs)

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A TMOS power FET, Q1, and an LM393N comparator provide a high-efficiency rectifter circuit. When VA exceeds VB, U1's output becomes h...
4/26/2013

pulse signal interfaces EPC1PC8

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The pulse signal examined is a driving signal of the power, used in the propulsion power to support, the drive current is usually several ...
4/25/2013

INA128, Adding -9V offset with reference pin BAV99

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There is a bipolar (-10V/+10V) ADC on my circuit. And want to measure 0V to 5V signal with high empedance circuitry. To not loose ADC resolu...
4/23/2013

Schematics LM358 Op Amp

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In this schematic, a piezo is the sensor. Piezos generate voltage when physically bent or deformed, the the foltage is in the millivolt rang...
4/21/2013

Mono Power Amplifier A1015, BD140 ,TIP2955

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Mono Power Amplifier - A1015, BD140 ,TIP2955 Circuit Diagram Typically audio amplifier stereo amplifier to a two amplifier. And if a mon...
4/18/2013

GP2D12 distance sensor 1N5819

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During 250 ms, sensor is configured as a light sensor (powered), C1 charges through D1 up to SENSOR+ ...
4/17/2013

Extending the MAX6959 LED Display-Driver Keyscan from 8-Keys to 12-Keys BAV70

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The circuit is shown in the image. Each key requires a dual diode (such as the low-cost common-cathode BAV70 in SOT-23), which pulls both...
4/16/2013

User Interface - Lcd Driver Based On The HT1621 Controller

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Application Note Abstract This Application Note describes implementation of a liquid crystal Display (LCD) driver based on the widely avai...
4/15/2013

Using DS3902 in Low Cost Optical Modules and Serial EEPROM AT24C02

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The two variable resistors in DS3902 are used to set bias and modulation currents. The settings are done through I2C* interface. Some modul...
4/11/2013

CA3046 VCA

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Using discrete transistors from a transistor array, this circuit avoids an OTA altogether. It uses one transistor as a Gilbert multipli...
4/10/2013

LM317T Variable Voltage Regulator

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The LM317T is a adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 amps over an output range of 1.25 ...
4/09/2013

Wideband Sense & Heater Control ADC muxing 74HC4052

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 The dual 4 to 1 line mux U4 ( 74HC4052 ) allows two groups of four signals to be sensed by the microcontroller's two ADC input lines ...
4/08/2013

Variable Frequency PWM Circuit IRFP064N

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R1,R6,R11 = 10K R2,R9 = 1K8 R3 = 100 ohm R4,R8 = 1K R5 = 22K R7 = 1M *R10 = 0.003 ohm R12 = 3K9 R13 = 100K R14 = 10 ohm/1 Watt P1 = 20K (F...
4/07/2013

FM Stereo decoder using TDA7388

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A very simple with a compact design FM stereo decoder schematic circuit can be designed using the TDA7388 IC manufactured by ST Microelectr...