DIY Electronic Kits lm317 Power Supply Voltage Regulator, 110V to DC1.25-12V Soldering Project Kit for Adults

DIY Electronic Kits lm317 Power Supply Voltage Regulator 110V to DC1.25-12V Voltmeter Soldering Project kit for Adults

DIY Electronic Kits lm317 Power Supply Voltage Regulator, 110V to DC1.25-12V Soldering Project Kit for Adults

Install the shorter components first, then install the taller omponents, the resistor has no positive or negative polarity, the long leg of the electrolytic capacitor is positive, the position of the black circle of the 1N4007 corresponds to the black marking position of the circuit oard, the long leg of the buzzer is positive, and the long leg of the light-emitting diode is positive, and the CD4069 IC is installed in the seat first, and the position of the notch corresponds to the position of the circuit board with the notch marking. Voltage can not be adjusted or the adjustment range is very small: Use a multimeter to measure the resistance of RP1 is not variable. Check whether the direction of CD4069 is installed in reverse. Check whether there is a voltage of more than 3V between pin 7 and pin 14 of CD4069. If the circuit voltage exceeds 15V, it is possible that CD4069 is damaged.

Key Features

• ✅ Product Describe: Adjustable regulated power supply assembled DIY kit, 110V input voltage, 1.25V-12V adjustable voltage output. Suitable for electronic DIY electronics enthusiasts to learn, welding practice. And can be used for electronic DIY small circuit power supply.
• ✅ Product function: one adjustable signal generator output, convenient to provide pulse signals to the experimental circuit, logic pen to test the logic level, and a buzzer to test whether the circuit is powered And low frequency signals.
• ✅ With 1-way buzzer: can test the wire on and off (connect the wire to the power supply and signal input. wire through - buzzer sound); can also test low-frequency signals, (the signal from the signal input terminal input, the signal from the signal input terminal, the signal from the signal input terminal, the signal from the signal input terminal, the signal from the signal input terminal, the signal from the signal input terminal. If there is a signal, the buzzer sounds).
• ✅ Product parameters:Power in voltage 110V Transformer power, Shell size: 11.2x6.9x4cm, PCB size: 7.2x6.2cm, Weight: 270g. ETAxopowo package the product with 14.5x11x5cm Sturdy cardboard box. include paper instruction and website tutorial.
• ✅ Application:widely used in schools to help students learn basic mechanical and electronic skills.Through the analysis of the circuit, understand the working principle of the circuit, learn to train electronic skills, welding training.

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