FM radio Assembly Kit Nixie Tube Display Teaching Training Production of Monolithic Welding

FM radio Assembly Kit Nixie Tube Display Teaching Training Production of Monolithic Welding

Product name: RDA5807S FM radio kit

Product model: TJ-56-632

Power supply voltage: DC5V

Radio frequency range: 87~108MHz

PCB board size: 95 * 59mm

Shell size: 110 * 71 * 24mm

Description:

Adopt RDA5807S radio module with the effect of global FM receiving band compatibility with noise elimination soft mute bass enhancement high sensitivity low noise strong anti-interference ability and other advantages
The power amplifier part adopts TDA2822 power amplifier integrated circuit which has the characteristics of simple circuit and good sound quality wide voltage range etc.
Frequency range:87-108MHz
Dual power supply: 5v mobile phone charger power supply or 2 x dry batteries（without batteries）

Product features：

1. With shell/without shell optional
2. With the advantages of noise cancellation soft silence bass enhancement high sensitivity low noise strong anti-interference ability etc.
3. With digital tube display
4. Using RDA5807s radio module amplifier part using TDA2822 power amplifier integrated circuit
5. Simple circuit good sound quality

Package Included:

Circuit diagram:

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Graphic Transistor Tester Kit LCR Triode ESR PWM Square Wave Signal

Graphic Transistor Tester Kit LCR Triode ESR PWM Square Wave Signal

This product is produced and sold by our store all of which use high-quality genuine components. The original ATMEGA package is brand new IC and the professional manufacturer is military-grade PCB to ensure the test accuracy and reliability!

The latest graphic display version of the transistor tester has high measurement accuracy and graphical display. The measurement results are directly displayed in the form of component symbols which is convenient and intuitive. The operation key is changed to rotary coding switch to select menu and control which is simple and convenient to use. Welcome to purchase!

Basic circuit performance:

Product model: JS-56-108

Power supply voltage: DC 5.5-12V (designed to use 9V 6F22 battery)

Working current: 24mA @ 9V

PCB size: 75 * 63 mm

Weight of single set: 0.080KG

Main functions:

1: One-button measurement operation delay automatic power off. The turn-off current is only 20nA supporting battery operation.

2: Automatic detection of PNP and NPN bipolar transistors N and P channel MOSFET JFET field effect transistor diode double diode thyristor resistance capacitance inductance. The pin definition and the current amplification factor (B) of the transistor and the conduction voltage (Uf) of the emission junction are automatically detected. The Darlington transistor can be identified by high threshold voltage and high current amplification factor.

3: The protection diode inside the bipolar transistor and MOSFET can be detected and displayed on the screen. The threshold voltage and gate capacitance of MOSFET can be measured.

4: It supports the measurement of two resistances and the potentiometer can also measure. The maximum resolution of resistance measurement is 0.1 Ω and the maximum measurement value is 50M Ω.

5: The capacitance measurement range is from 25pf to 100mF (100000 UF). The resolution can reach 1 pF. It can detect the equivalent series resistance (ESR) of capacitance above 0.09UF with a resolution of 0.01 ohm. It can display the voltage loss value of the capacitor and add a separate online ESR measurement function of the capacitor. It can directly measure the capacity and ESR of the capacitor online (on the circuit) which is convenient for maintenance and fault finding.

6. The inductance measurement range is 0.01MH-20H otherwise it will be displayed as resistance. If the DC resistance value of the inductance is higher than 2100 Ω it will also be displayed as resistance.

7: It can display the symbol of the correct direction for the two diodes and display the forward voltage drop at the same time. LED is detected as a diode and the forward voltage drop is higher than the normal value. The dual LED is detected as dual LED. At the same time the LED flashes which is very intuitive.

8: The time for each test is about two seconds. Only the measurement of large capacitance and inductance will take a long time.

New dialog function is added. The following additional functions can be selected through the menu by easily rotating the coding switch:

1. The square wave signal generator can select the built-in square wave signals in the range of 1HZ-2MHZ;

2. PWM pulse width signal generator can generate 1-99% pulse width modulated signal;

3. The frequency meter function can test the frequency signal of 1HZ-25KHZ or higher (at this time the accuracy is slightly reduced)

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Magnetic Levitation Electronic Small Fabrication Experiment Coil Push-Down Module Circuit Board Welding Kit

Magnetic Levitation Electronic Small Fabrication Experiment Coil Push-Down Module Circuit Board Welding Kit

Product name: push-down maglev DIY welding kit

Product model: TJ-56-254

Working power supply: DC12V2A

Power: 2~5W

Suspended weight: less than 100g

Suspension distance: less than 2cm

Product features

1. The circuit is simple reliable and practical;

2. This kit is equipped with acrylic shell which is not only beautiful but also can effectively protect circuit components which is convenient for demonstration and play.

3. This DIY kit is designed for scientific research and experiment and is not applicable to other purposes!

PCB size: 85 * 85mm

Description:

Magnetic levitation is mainly composed of coil magnet Hall sensor and drive circuit. When the magnet is close to the Hall sensor under the coil the Hall sensor will output an analog quantity when sensing the magnetic field change to the amplification circuit for amplification and then conduct pulse width modulation through this value. When the magnet and suspended objects fall away from the sensor due to gravity the sensor output value will increase the voltage duty ratio on the coil and the coil magnetic force Thus the magnet and suspended object are pulled. On the contrary when the distance from the sensor is very close the sensor output value reduces the coil voltage duty ratio and the coil magnetic force is weak. The magnet and suspended object depend on their own weight to keep away from the sensor and the magnetic object is suspended by continuously adjusting the coil voltage duty ratio.

usage method

Placing suspended solids and precautions

1. After the equipment is powered on the power indicator on the PCB board will be lit. At this time hold the float from the bottom of the ring to the bottom of the coil slowly. At about 5cm you will feel the force that the coil will absorb the float at this time. At this time hold the float with one hand to feel the upward force and use the other hand to adjust the sliding rheostat on the PCB board. When you feel that the two forces can almost balance stop adjusting the sliding rheostat Then slowly loosen the float to keep it stable. In this way the float can be successfully floated. The sliding rheostat reduces the magnetic force clockwise and increases the magnetic force counterclockwise. The magnetic force cannot be too large or too small. The rotating position of the sliding rheostat can refer to the above picture.

2. The float must be powered off for cooling if it fails to be placed for many times (up to 5 times) otherwise it is easy to damage the element

3. Do not float the float on the kit for a long time (up to 5 minutes) which may cause equipment damage.

Circuit diagram:

Package Included:

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Pixel game console production Finished-set 51 MCU Tetris pieces HU-001

Pixel game console production Finished-set 51 MCU Tetris pieces HU-001

Install video: https://ift.tt/z3qRK8n? directly copied to the browser to watch video tutorial

Shell size 12.2cm*2.2CM*9.2CM

Weight: 114G loose parts (HU-001) + shell (HU-001) 185G

Operating voltage: 5V mobile phone charger power bank 4 No.5 dry batteries (not provided in the kit

 

Battery)

Shell size: 126*82*25 (mm)

 

The Pixel Game Console Kit contains the following features:

1 Tetris 2 snake 3 racing 4 masturbation

5 brightness can be adjusted 6 sound can be switched

Instructions for use:

1. Power on!

2. Press left and right buttons to select the game project;

3. When selecting a game 1 to 4 is the game item 5 is the screen brightness and 6 is the game sound

 

Pass;

4 the "OK" key to enter the selected game;

Game button instructions:

(1) Tetris operation instructions: the left and right keys for the box to move the keys the next box

 

Speed up the drop and make sure the key is square rotation.

(2) Snake operation instructions: up and down around the keys for the snake moving direction.

(3) Car operation instructions: The left and right keys are for the car to move left and right and the key is for obstacle acceleration

 

Fall.

(4) Aircraft operation instructions: left and right keys for the aircraft to move around to determine the key to launch bullets.

 

 

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Electronic Kit Bluetooth Speaker Electronics Soldering Project Stereo Support U Disk 2*3W Speakers

Electronic Kit Bluetooth Speaker Electronics Soldering Project Stereo Support U Disk 2*3W Speakers

DIY Electronic Kit Bluetooth Speaker Electronics DIY Soldering Project Kit Bluetooth Stereo Speaker Support U Disk 2*3W Speakers

Note:

1 Package includes the instructions of Bluetooth Speaker.

2 If you need the instructions and whole soldering video Please contact with us.

3 All parts need to be installed by yourself. The outer cover is transparent if the paper is torn off. The entire Bluetooth speaker kit is equipped with a USB power cord and the Bluetooth circuit board is well welded. You only need to connect the cable and assemble the sound control board. The power supply can be powered by a mobile phone charger or a computer 5V power supply. The sound quality is better when using a 2A power supply.

Function:

3.7-5V DC power supply to automatically play music 3W+3W stereo power amplifier support Bluetooth support power-off memory U disk to play music can be powered by a power bank.

Bluetooth Operation:

Turn on the Bluetooth of the mobile phone scan the device directly find "XC046" and click connect. After disconnecting Bluetooth it will automatically switch to U disk.

Power amplifier size: 106x66x60mm

Channel output: 2 channels

Output power: 3w+3w

Power supply voltage: DC 4.2-5v voltage 5v exceeding 5v will damage the module

Rated current: 1.5A-2A.

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Bluetooth Speaker Making And Assembling Electronic Welding Kit Teaching Practice

Bluetooth Speaker Making And Assembling Electronic Welding Kit Teaching Practice

DIY Bluetooth Speaker Making And Assembling Electronic Welding Kit Teaching Practice DIY Electronic Kit Speaker

Features:

1. It can be controlled by remote control to realize the volume control of the switch

2. Full-range speaker with PU side silver-black diaphragm 40 magnet 4 ohm 3W high cost performance clear sound quality

3. Interface 3.7-5V DC power supply to automatically play music stereo power amplifier support Bluetooth support power-off memory U disk to play music

4. Acrylic shell is composed of 6 pieces of 3mm high transparency acrylic spliced together. Exquisite and beautiful the brown protective film needs to be removed before splicing

5. Very suitable for welding connection and DIY production teaching and training

Parameter:

Channel output: 2 channels

Output power: 3w+3w

Power supply voltage: DC 4.2-5V voltage 5V exceeding will damage the module

Rated current: 1.5A-2A

Wiring instructions: connect the white terminal to the speaker and the red terminal to the power supply

Bluetooth operation: Turn on the Bluetooth of the mobile phone scan the device directly and find "XC

046 Click to connect. After disconnecting Bluetooth it will automatically switch to the USB flash drive.

Circuit function:

The red terminal of the Bluetooth module is 5V power supply the white terminal is for the left and right channels of the speaker the red wire is positive + and the black is negative -. With the sound of music or other sounds the LED lights follow the rhythm of the sound (the speed of the sound flashes and moves. After the welding is successful you can feel the beautiful melody combination of sound and light. Circuit principle: voice-activated LED melody The lamp circuit is composed of a power supply circuit a microphone amplifier circuit and an LED light indicator circuit. The power supply uses two batteries. The MIC converts the sound signal into an electrical signal which is coupled to Q1 through C2 for amplification and the amplified signal is sent to U1 and U1 pushes the LED to emit light The louder the sound the higher the brightness of the LED the faster the water flow.

Notice:

All parts need to be installed by yourself. The outer cover is transparent if the paper is torn off. The whole set of bluetooth speaker kit is equipped with uSB power cord. The bluetooth circuit boards are all welded. You only need to connect the wire and assemble the sound control board. The power supply can be powered by a mobile phone charger or a computer 5V. The sound quality is better when using a current of 2A. .

Reminder: Please strictly follow the product instructions. Improper use and wiring will cause the amplifier to fail to work normally or damage the amplifier.

Package Include:

DIY parts*1

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