This circuit is built to add capacitance meter range range for a general digital multimeter which is small,cheap and most popular. [...]
Include: Volt meters :: Sound level meter :: Analog vu meter :: Soil moisture meter :: Digital meter circuit diagram :: Temperature measurements :: Electronic measurement tools :: Frequency meters :: Best battery tester :: Transistor tester project
This fine 1.5V battery tester circuit using LM324, Can measure the voltage of the 1.5V battery AA or AAA. As decimal point. Easy to use by LEDs display
This is an Simple blown fuse alarm circuit for AC line, cause we know immediately when broken fuse circuit and it has a few components so easy build cheap.
This is Automatic day indicator circuit, by LED display each day one by one LED.Use light-activated in day to set LDR-sensor and CD4017 acts as drive LEDs
Universal tester circuit by VCO or voltage controlled oscillator circuit that use voltage signal level from input to control amount of frequencies output
Why withered trees. It is dying. Oh, the soil is too dry. How can we use electronics to help trees? Build Simple soil moisture alarm circuit. The tree is very…
This project is a sound level meter circuit that easy and very cheap, can drive 9 LED display,The LB1409 is used as base of this circuit makes small size.