Transistor npn - Circuitos electrónicos


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Transistor npn


Transistor Tester to test Hfe and working of NPN and PNP TransistorsTransistor Tester to test Hfe and working of NPN and PNP Transistors

Transistor tester circuit with diagram, schematic and pcb layout to test transistor working and Hfe of NPN and PNP transistors. One of the circuits is very simple and is made using diodes and LED.

Circuitos electrónicos

http://www.circuitstoday.com/transistor-tester-circuit


Tachometer Circuit. - Jose Pino's Projects and Tidbits.Tachometer Circuit. - Jose Pino's Projects and Tidbits.

A simple tachometer circuit using one NPN transistor. (12/04/2007)

Circuitos electrónicos

http://josepino.com/circuits/?tachometer-circuit


Heat Detector + Siren - Schematic DesignHeat Detector + Siren - Schematic Design

Heat detector circuit that already integrated with siren circuit in the output. It applies a NPN transistor T1 (BC109), PNP transistor T2 (AC188) to detect heat

Circuitos electrónicos

http://circuitdiagram.net/heat-detector-siren.html


Circuit: 175KHz INDUCTIVE PULSE RECEIVER __ Circuit designed by David A. Johnson, P.E.Circuit: 175KHz INDUCTIVE PULSE RECEIVER __ Circuit designed by David A. Johnson, P.E.

This circuit is discussed in more detail in the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal from the above transmitter and use a single NPN transistor to provided enough Amplification for the signal to be easily viewed on an oscilloscope.

Circuitos electrónicos

http://www.discovercircuits.com/DJ-Circuits/175krvr.htm


Circuit - 175KHz INDUCTIVE PULSE RECEIVER - Circuits designed by David A. Johnson, P.E.Circuit - 175KHz INDUCTIVE PULSE RECEIVER - Circuits designed by David A. Johnson, P.E.

This circuit is discussed in more detain in the Experimenters Journal. The receiver’s six inch diameter coil detects the ring signal from the above transmitter and use a single NPN transistor to provided enough amplification for the signal to be easily viewed on an oscilloscope.

Circuitos electrónicos

http://discovercircuits.com/DJ-Circuits/175krvr.htm


A Hiqh Quality Headphone Amplifier Circuit

DescriptionSome lovers of High Fidelity headphone listening prefer the use of battery powered headphone amplifiers, not only for portable units but also for home ?table? applications. This design is intended to fulfill their needs. An improved output driving capability is gained by making this a push-pull Class-B arrangement. Output power can reach 100mW RMS into a 16 Ohm load at 6V supply with low standing and mean current consumption, allowing long battery duration. Circuit Diagram

Circuitos electrónicos

http://easycircuit012.blogspot.com/2013/08/01-a-hiqh-quality-headphone-amplifier.html


Electronic Circuits of the Week most recentElectronic Circuits of the Week most recent

Electronic Circuit selected from among the collections of free 30, 000 + electronic circuits schematics carefully cross-referenced.

Circuitos electrónicos

http://discovercircuits.com/circuit-wk.htm


Pak Media: Light dimmer circuits

Circuitos electrónicos

http://apakmedia.blogspot.com/2011/01/light-dimmer-circuits.html


Avisador de bajo voltaje para bateras de Litio | Simplificate 2.0Avisador de bajo voltaje para baterías de Litio | Simplificate 2.0

Estoy empezando un pequeño proyecto, se trata de un cargador para móviles portátil y para ello voy a usar un conversor DC-DC de Dealextreme (No por nada sino por que es pequeño, barato y no tienes que ponerte a soldar) y una bateria de Litio de mi antiguo telefono, como ya explique en el alguna entrada que hice sobre baterias las de litio.......

Circuitos electrónicos

http://cuningan.wordpress.com/2013/03/12/2013/03/12/2013/03/12/2013/03/12/avisador-de-bajo-voltaje-para-baterias-de-litio


How to build 25W Mosfet audio amplifier (circuit diagram)

25w audio mosfet amplifier, circuit diagram, electronic project

Circuitos electrónicos

http://www.high-voltage-lab.com/1/25w-mosfet-audio-amplifier


Portable Microphone Preamplifier

Portable Microphone Preamplifier, schematic

Circuitos electrónicos

http://iq-technologies.net/projects/audio/024


Amplifier Circuits: IF Intermediate frequency

Amplifier Circuits: IF Intermediate frequency.

Circuitos electrónicos

http://www.discovercircuits.com/A/a-if.htm


WEIN BRIDGE OSCILLATOR CALCULATOR | MY CIRCUITS 9

Circuitos electrónicos

http://mycircuits9.blogspot.com/2012/06/wein-bridge-oscillator-calculator.html


Water Pump Relay Controller Circuit Schematic

DescriptionBy means of a Relay, employed to drive a water pump, this circuit provides automatic level control of a water reservoir or well. The shorter steel rod is the "water high" sensor, whereas the longer is the "water low" sensor. When the water level is below both sensors, IC1C output (pin #10) is low; if the water becomes in contact with the longer sensor the output remains low until the shorter sensor is reached.At this point IC1C output goes high, Q1 conducts, the Relay is energized and.......

Circuitos electrónicos

http://easycircuit012.blogspot.com/2013/08/01-water-pump-relay-controller-circuit.html


all about wiring diagram: FM adaptor circuit for car stereo

Circuitos electrónicos

http://allwiring.blogspot.com/2013/05/fm-adaptor-circuit-for-car-stereo.html



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