[HW-668] SX1308 Boost Converter Module Adjustable Step Up DC DC 2-24V 2-28V 2A
High Current Output Adjustable DC Power Supply HW-668 SX1308 2A Step Up Boost Converter Module
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LM3940 Fixed Voltage Regulator Digital Logic Level Systems IC Chips 4.5-5.5v to 3.3v LDO 1A
3-Pin TO-220 Package 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. a true low dropout #regulator it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V #logic, with prime power provided from a 5-V bus. The minimum #output capacitance required to maintain stability is 33 µF (this value may be increased without limit). Larger values of output capacitance will give improved transient response.
Digital multimeter error lowbat repair test replace with 18650 lithium-ion batteries
multimeter battery low problem
DIY USB 5V Mist Maker Solderless Circuit Ultrasonic Humidifier Fogger on Mini Breadboard
DIY USB 5V Ultrasonic Humidifier Fogger atomizer components / parts list: 1x 113khz piezoelectric #disc 1x ne555 timer ic 1x irlz44n #mosfet 1x 330 uh #inductor 1x 20 ohm resistor 1x 1k ohm potentio 1x 10nf capacitor 2x 100nf capacitor dc boost converter breadboard wires micro usb to dip adapter