transistor ‹ BUILD CIRCUIT

4

How to use UM66 or BT66 Musical IC

Jan 28 in LDR Engineering Written by: Sagar

The following schematic is for UM66 or BT66 musical IC. You need very few components to make this circuit. Pin configuration for UM66 is given below: Zener diode rated 3.3V maintains the required 3.3V for UM66 IC. The output from Vo of UM66 is amplified by BC547 transistor. Click on the video to see the output

10

Dark sensor using two transistors

Jan 08 in LDR Engineering Written by: Sagar

This works same as the other dark detector circuit. When light is falling on LDR, its low resistance drives transistor Q1-BC547 into conduction. This keeps transistor Q2 cut-off due to low base bias. The D1-LED does not get power as long as ambient light falls on LDR. When the resistance of LDR becomes high in darkness, transistor Q1 stops conducting and transistor Q2 starts conducting to turn on the D1-LED. Datasheet of BC547: http://www.datasheetcatalog.org/datasheet/fairchild/BC547.pdf Click...

0

Basic RC circuit

Nov 17 in LDR Engineering Written by: Sagar

Basic RC circuit Using an RC circuit, we can keep an LED on for specific time as determined by resistors R1, R2 and capacitor C1. As we press the Push-to-On switch, the capacitor C1-1000uF gets charged and it gives biasing voltage to the transistor Q1 through resistance R2-1K. As we leave the switch, the LED keeps on glowing because of the charge present in the capacitor. Discharging rate of capacitor is determined by the resistor R1 and R2, hence it also determines the timing of RC circuit. The charge...

3

Dark sensor using BC557

Nov 17 in LDR Engineering Written by: Sagar

An automatic dark sensor can be made using a PNP transistor(BC557). As the ambient light falling on LDR decreases, the LED glows. The sensitivity of the circuit can be adjusted using the variable resistor VR1. If this circuit does not work with 10K, use 100K.

0

AM receiver from dark sensor

Nov 17 in LDR Engineering Written by: Sagar

The Darlington transistor (often called a Darlington pair) is a semiconductor device which combines two bipolar transistors in a single device so that the current amplified by the first is amplified further by the second. This configuration gives a high current gain (written β, hfe, or hFE) and can take less space than two separate transistors because the two transistors can use a shared collector. Integrated circuit packages are available, but it is still common also to use two separate...

1

Building a circuit on breadboard

Nov 08 in LDR Engineering Written by: Sagar

A breadboard is a device for testing temporary electronics projects. Components used to test a circuit can be reused for other projects. None of the components are damaged. Almost all people start to learn electronics using breadboard because it is the simplest way of making circuit. The photograph shows a typical small breadboard which is suitable for beginners building simple circuits with one or two ICs (chips). Connections on Breadboard Breadboard has many tiny sockets or holes...

4

Dark sensor on breadboard

Nov 08 in LDR Engineering Written by: Sagar

Building a Circuit on Breadboard(Dark Detector using 2 transistors) Get following components: NPN transistor- BC547 or BC147 or BC548 Take 2 transistors Resistor- 1K Resistor- 330Ohm Light emitting diode(LED)- Any color Connecting wires- Use single-core plastic-coated wire of 0.6mm diameter (the standard size)-You can use wire that is used for Computer Networking. Power supply-6V or 9V STEPS Step 1: Put first transistor Q1-BC547 on breadboard as shown in the picture. Step...

transistor

How to use UM66 or BT66 Musical IC

Dark sensor using two transistors

Basic RC circuit

Dark sensor using BC557

AM receiver from dark sensor

Building a circuit on breadboard

Dark sensor on breadboard

Search

Flickr photostream

Connect with us

Categories

Recent Posts

Recent Comments

Connect with us

UserOnline

Links

UserOnline

transistor

How to use UM66 or BT66 Musical IC

Dark sensor using two transistors

Basic RC circuit

Dark sensor using BC557

AM receiver from dark sensor

Building a circuit on breadboard

Dark sensor on breadboard

Search

Flickr photostream

Connect with us

Categories

Recent Posts

Popular Posts

Recent Comments

Tags

Connect with us

UserOnline

Links

UserOnline