Uploaded May 2025 | Updated September 2026, 3 weeks ago
Power circuit for the two 20W UV lamps each and the high voltage cage of the mosquito repellent lamp.
#science #cool #highvoltage
Power circuit for the two 20W UV lamps each and the high voltage cage of the mosquito repellent lamp.
#science #cool #highvoltage




![Fire Alarm DIY Tutorial with LM358 π₯
This is a Fire Alarm/Sensor! - the core of this simple circuit is the LM358 IC. The heat is detected by a thermistor, a resistor that varies its value as the ambient temperature changes. With the 10KΞ© trimmer it is possible to adjust the temperature, at which the alarm will be actived. Finally, the buzzer I used is an active type, a normal buzzer would not sound.
β Components:
- 1x LM358 [ https://bit.ly/2VCFPLy ]
- 1x 10 KΞ© Thermistor [ https://bit.ly/2yrIhMG ]
- 1x 10 KΞ© Resistor [ https://bit.ly/2ytgn3e ]
- 2x 330Ξ© Resistors [ https://bit.ly/2ytgn3e ]
- 1x 10 KΞ© Trimmer [ https://bit.ly/3cyvozr ]
- 1x Active Buzer [ https://bit.ly/2VisN6H ]
- 2x LED 5mm [ https://bit.ly/2UzRDgR ]
PCB coming soon ;)
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Watch another video =)
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WARNING: This video is only for demonstration. I dont take any responsibility for damage to things, people and animals. Dont play with fire!
#Fire #Alarm #Sensor Fire Alarm DIY Tutorial with LM358 π₯](https://i.ytimg.com/vi/_YVGpxwwtk0/mqdefault.jpg)





