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10 K Ohms Log Rotary Potentiometer

High quality 16mm 10 k Ohm logarithmic potentiometer  . Ideal for all types of audio products including radios and amplifiers. supplied with PCB terminals and 20mm long knurled metal shaft to suit most installations. This logarithmic potentiometer has a maximum 300 degree total rotation angle and 15,000 cycles rotational life, rated at 0.125W. Complies with RoHS.

 

Supplied with 1 washer and 1 nut.

 

0.250 KWD Add to cart

4.7 k Ohms Log Rotary Potentiometer

High quality 16mm 4.7 k Ohm logarithmic potentiometer  . Ideal for all types of audio products including radios and amplifiers. supplied with PCB terminals and 20mm long knurled metal shaft to suit most installations. This logarithmic potentiometer has a maximum 300 degree total rotation angle and 15,000 cycles rotational life, rated at 0.125W. Complies with RoHS.

0.250 KWD Add to cart

PN4117A FET N-Channel Switch 40V

Low Capacitance, Ultra High Input Impendence, N-Channel JFET Amplifier  N channel FET(Field Effect Transistor)  It is ideal for High Input Impendence Application. Available in TO-92 3L ROHS, TO-72 4L ROHS, SOT-23 3L ROHS and Tested Die.

0.150 KWD Add to cart

IN4007 Rectifier DIode

A diode is a two-terminal electronic component with asymmetric conductance; it has low  resistance to current in one direction, and high  resistance in the other direction.

A 1N4007 Diode is a device which allows current flow through only one direction. That is the current should always flow from the Anode to cathode.

The maximum current carrying capacity is 1A it withstand peaks up to 30A. Hence we can use this in circuits that are designed for less than 1A.  The reverse current is 5uA which is negligible. The power dissipation of this diode is 3W.

0.050 KWD Add to cart

Diode IN4001

This is a simple, subminiature size, axial lead mounted rectifier diode.

A diode is a two-terminal electronic component with asymmetric conductance; it has low  resistance to current in one direction, and high  resistance in the other direction.

Often used for reverse voltage protection, the 1N4001 is a staple for many power, DC to DC step up, and breadboard projects. The 1N4001 is rated for up to 1A/50V.

0.050 KWD Add to cart

BC337 NPN Amplifier Transistors

The BC337 is an NPN transistor with a maximum gain of 630, commonly used in low power audio applications. It can also switch loads upto 45V and 800mA hence also used as general purpose transistor. 

The BC337 is an NPN transistor with a maximum gain of 630, commonly used in low power audio applications. It can also switch loads upto 45V and 800mA hence also used as general purpose transistor. 

The BC337 is an NPN Transistor commonly used in low power amplifier circuits. The Transistor can provide a maximum gain (hfe) of 630. The BC337 has three part names, the gain value of BC337-16 is 100 to 250, for BC337-25 it is 160 to 400 and for BC337-40 it is 250 to 630. Apart from the gain value other parameters are similar for all the three part numbers.

The transistor also has a high collector current of upto 800mA and a decent collector emitter voltage of 45V and the base trigger voltage is only 5V. This makes the transistor suitable to be used in general purpose switching circuits. Due to its low base trigger voltage it can be easily controlled by digital circuits like microcontroller circuits. So, if you are looking for a transistor for audio amplification then you might consider the BC337. Also look into the more commonly used 2N2222 Transistor if you are looking for a replacement for BC337 to switch loads.

 

Applications

  • Low power audio amplifiers
  • Small signal amplifiers
  • Audio frequency Driver
  • Amplifier Output Stage
  • General purpose switching

 

 

0.250 KWD Add to cart

BC109 Bipolar NPN Transistor

The BC109 from BJTs  are through hole, NPN low power, silicon planar epitaxial transistors in TO-18 metal can package. This device is used for switching and amplification.

Applications

Signal Processing, Power Management, Portable Devices, Consumer Electronics, Industrial

0.250 KWD Add to cart

LM317 Voltage Regulator - Adjustable

LM317 Variable Voltage Regulator

Adjustable 3-terminal positive voltage regulator

Output voltage can be set to range from 1.25V to 37V

When it comes to variable voltage regulation requirements LM317 would most likely be the first choice. Apart from using it as a variable voltage regulator, it can also be used as a fixed voltage regulator, current limiter, Battery charger, AC voltage regulator and even as an adjustable current regulator. One notable drawback of this IC is that it has a voltage drop of about 2.5 across it during regulation, so if you looking to avoid that problem look into the other equivalent IC’s given above.

So, if you are looking for a variable voltage regulator to deliver current up to 1.5A then this regulator IC might be the right choice for your application.

Pin Number

Pin Name

Description

1

Adjust

This pins adjusts the output voltage

2

Output Voltage (Vout)

The regulated output voltage set by the adjust pin can be obtained from this pin

3

Input Voltage (Vin)

The input voltage which has to be regulated is given to this pin

 Note: The product  brand shown in the picture for representation only. ctual product may vary.

0.500 KWD Add to cart

L7905 negative voltage Regulator

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In our case the 7905 IC is an negative 5V regulator, meaning it provides -5V as output. The name 7905 signifies two meaning, “79” means that it is a negative voltage regulator and “05” means that it provides 5V as output. So our 7905 will provide a -5V output voltage.

The output current of this IC can go up to 1.5A, but the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current. For example if the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat. 

 

Why do we need Negative Voltage Regulators?

Negative voltage regulators are mainly used in Op-Amp and other circuits where a negative supply voltage is needed. In many cases where an Op-Amp is working in dual mode power supply a negative voltage will be regulated by these 79XX ICs. Also these IC’s will be able to source current into the ground rail instead of sinking it as normally

7905 Regulator Applications

  • Constant -5V output regulator to for op-amp signals
  • Adjustable Output Regulator
  • Current Limiter for certain applications
  • Regulated Dual Supply

Pin Number

Pin Name

Description

1

Ground (Gnd)

Unregulated Input Voltage

2

Input (V+

Connected to Ground

3

Output (Vo)

Outputs Regulated -5V

0.500 KWD Add to cart

7805 Regulator -5V

Voltage regulators are very common in electronic circuits. They provide a constant output voltage for a varied input voltage. In our case the 7805 IC is an iconic regulator IC that finds its application in most of the projects. The name 7805 signifies two meaning, “78” means that it is a positive voltage regulator and “05” means that it provides 5V as output. So our 7805 will provide a +5V output voltage.

The output current of this IC can go up to 1.5A. But, the IC suffers from heavy heat loss hence a Heat sink is recommended for projects that consume more current. For example if the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W. This 7 Watts will be dissipated as heat. 

Pin Number

Pin Name

Description

1

Input (V+)

Unregulated Input Voltage

2

Ground (Gnd)

Connected to Ground

3

Output (Vo)

Outputs Regulated +5V

0.500 KWD Add to cart

LM35 Temperature sensor

LM35 LM35DZ Temperature Sensor is an analog temperature sensor. The temperature is determined by measuring the output voltage of the LM35.The LM35 sensor is a high precision integrated thermoelectric sensor whose output voltage is linearly proportional to Temperature in degrees Celsius. The LM35 sensor is a precision sensor, manufactured by National Semiconductor, which displays a linear voltage output relative to the temperature it is in when it is powered by a voltage of 4-20Vdc and GND, having at its output a signal of 10mV for each Celsius Degree of temperature.

The LM35 does not require any external calibration or trimming to accurately provide temperature values ​​with variations of ¼ ° C or even ¾ ° C within the temperature range of -55 ° C to 150 ° C. This sensor has output with low impedance, linear voltage and precise inherent calibration, making the reading interface specifically simple, making the entire system less costly. This sensor can be fed with simple or symmetrical power, depending on what you want as an output signal, but regardless of that, the output will continue to be 10mV / ºC. It drains only 60μA for these feeds, so its self-heating is approximately 0.1ºC outdoors.

The LM35 sensor is presented with several types of encapsulations, the most common being the TO-92, which looks more like a transistor, and offers a great cost-benefit ratio, being the cheapest of the models and providing the same precision of the others. The great diversity of encapsulations is due to the high range of applications of this integrated.

0.500 KWD Add to cart

VP0808 MOSFET, P-Channel Enhancement-Mode

This enhancement-mode (normally-off) transistor utilizes a vertical DMOS structure and well-proven, silicon-gate manufacturing process. This combination produces a device with the power handling capabilities of bipolar transistors and the high input impedance and positive temperature coefficient inherent in MOS devices. Characteristic of all MOS structures, this device is free from thermal runaway and thermally-induced secondary breakdown. Vertical DMOS FETs are ideally suited to a wide range of switching and amplifying applications where very low threshold voltage, high breakdown voltage, high input impedance, low input capacitance, and fast switching speeds are desired.

 

 

Free from secondary breakdown

Low power drive requirement

Ease of paralleling

Low CISS and fast switching speeds

Excellent thermal stability

Integral source-drain diode

High input impedance and high gain

 

0.750 KWD Add to cart

2N3904 NPN transistor

2N3904 is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. 2N3904 has a gain value of 300; this value determines the amplification capacity of the transistor. The maximum amount of current that could flow through the Collector pin is 200mA, hence we cannot connect loads that consume more than 200mA using this transistor. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA.

When this transistor is fully biased then it can allow a maximum of 200mA to flow across the collector and emitter. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (V­CE) or Collector-Base (VCB) could be 40V and 60V respectively. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around 600 mV.

Pin Number

Pin Name

Description

1

Emitter

Current Drains out through emitter

2

Base

Controls the biasing of transistor

3

Collector

Current flows in through collector

Applications:

  • Driver Modules like Relay Driver, LED driver etc...
  • Amplifier modules like Audio amplifiers, signal Amplifier etc...
  • VCB and VBE is high hence can be used to control voltage loads up to 40V
  • Commonly used in TV and other home appliances
0.250 KWD Add to cart

2N2222A –NPN Transistor

2N2222A is a NPN transistor hence the collector and emitter will be left open (Reverse biased) when the base pin is held at ground and will be closed (Forward biased) when a signal is provided to base pin. 2N2222A has a gain value of 110 to 800, this value determines the amplification capacity of the transistor. The maximum amount of current that could flow through the Collector pin is 800mA, hence we cannot connect loads that consume more than 800mA using this transistor. To bias a transistor we have to supply current to base pin, this current (IB) should be limited to 5mA.

When this transistor is fully biased then it can allow a maximum of 800mA to flow across the collector and emitter. This stage is called Saturation Region and the typical voltage allowed across the Collector-Emitter (V­CE) or Base-Emitter (VBE) could be 200 and 900 mV respectively. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around 660 mV.

Pin Number

Pin Name

Description

1

Emitter

Current Drains out through emitter

2

Base

Controls the biasing of transistor

3

Collector

Current flows in through collector

Applications

  • Can be used to switch high current (upto 800mA) loads
  • It can also be used in the various switching applications.
  • Speed control of Motors
  • Inverter and other rectifier circuits
  • Can be used in Darlington Pair.
0.250 KWD Add to cart

N2222 NPN Transistor 0.8A 40V TO-18 Metal case

Manufacturer: STMicroelectronics-SGS THOMSON
Manufacturer part no: 2N2222A
Capsulation: TO-18
RoHS: Yes

 

0.300 KWD Add to cart