Introduction:

• It is an AC-DC 110V to 1.25V-12V LM317 Adjustable Step Down Power Supply Buck Voltage Converter LED Display DIY Kit.
• It can output stable voltage. Users can change output by operating a potentiometer.
• It also can be used as a signal generator or logic circuit or buzzer alarm circuit.

Note:

• It is a DIY kit. Installation steps can be download from documentation
• Its max output power is 2.5W.
• It can not be used as a charger to charge the phone.
• Since the output current is not large, it can only supply power to the small current circuit.
• If the power supply load is too large, the voltage will drop.

Feature:

• AC 110V input work voltage
• Adjustable output voltage
• RC Signal generator
• Logic signal test circuit
• Buzzer alarm circuit
• DIY soldering project
• Simple and easy to operate

Parameter:

• Item name: AC-DC 110V to 12V LM317 Buck Voltage Converter DIY Kit
• Input voltage:AC 110V
• Output voltage:DC 1.25V-12V
• Output current:200mA
• Output power:2.5W
• Power wire length:100cm
• Output wire length:20cm
• Work Temperature:-40℃~85℃
• Work Humidity:0%~95%RH
• Size(Installed):1126840mm

Detection Circuit Conduction Status:

• Connect the wire to the positive terminal of the power supply and the signal input terminal, when the wire is connected, the buzzer will sound

Test Low-frequency Signal:

• Input the signal from the signal input terminal, if there is a signal, the buzzer will sound

Long Handle Voltage Adjustment Knob:

• 1.25-12V adjustable regulated output, output current 200mA, suitable for powering small DIY circuits

Function

• Voltage converter: Input AC 110V and adjustable output DC 1.25V-12V 200mA. It can provide work power for low-power electrical appliances.
• Signal generator: It can output one PWM signal for laboratory circuit tests. Users can adjust output frequency by blue/white potentiometer.
• Logic test circuit: It can set input high or low TTL signal and indicator by LED.
• Buzzer alarm circuit: Circuit test and alarm by the buzzer.

Application:

• Low power supply
• Logic signal test instrument
• Signal generator

Circuit Diagram:

Installation Manual:

• Please download the documents