This Simple Multi Siren Tones Circuit using the UM3561 chip works like a small sound box for emergency vehicle sounds. Moreover, the special UM3561 chip can create many siren noises, such as the “wee woo” sound of a police car or the fast tone of an ambulance. Furthermore, it only needs few more parts and […]
DIY Projects
Simple IC TDA2822 Stereo Audio Amplifier Circuit
Simple IC TDA2822 Stereo Audio Amplifier Circuit is small chip with stereo amplifier makes weak music sound go louder which is strong enough for speaker or headphone. However, despite using very little energy it still provides 250 milliwatts each side with good sound for small things like walkman, hearing aid or little stereo. So next […]
Simple Static Electricity Detector Circuit
Simple Static Electricity Detector Circuit is like alarm for electricity when gathers on things like clothes and this happen when we rub things together. Also, this kind of electricity can break small electronics, so detector is useful near them; also detector have special sensor which feels electric change in air. Maybe its wire stick out […]
DC Voltage Doubler Circuit
DC Voltage Doubler Circuit is like small power booster, which takes normal battery power and make almost double. Also, it use smart parts like diodes and capacitors and they work like tiny switch and small electric bucket; sometimes many also use transistor or tiny chip to help. Imagine electric flow from battery like small stream, […]
Thermometer Circuit
Thermometer Circuit is like a small detective for heat, as it has got special sensor which smells temperature and then show on the screen like digital thermometer. Also, these circuits come in many shape and size for the use in different way to feel temperature, but no matter which one all of them will indicate […]
Simple TV Remote Tester Circuit
Simple TV Remote Tester Circuit is small tool like a doctor for ones remote, as it uses one infrared sensor like eye for light which we cannot see and to check if remote give signal when one presses the button. If signal arrives small light turns ON or buzzer make beep sound which means remote […]