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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
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telephone line status indicator circuit
Posted inMeters & Detectors

The telephone line status indicator

The telephone line status indicator to prevent the hearing others talk on the phone accidentally and a Protection to making phone calls simultaneously. [...]
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capacitors virtual which caused from parallel of metal
Posted inMeters & Detectors

Simple metal detector Project

This is a simple metal detector circuit, Can find various metal and adjustable sensitivity Easy to use near metal. use IC-NE556-Monostable multivibrator
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Add to capacitance measurement Range for digital Multimeter
Posted inMeters & Detectors

Adding Capacitance Meter Range for Digital Multimeter

This circuit is built to add capacitance meter range range for a general digital multimeter which is small,cheap and most popular. [...]
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1.2V or 1.5V battery tester circuit using LM324
Posted inMeters & Detectors

1.5V battery tester circuit using LM324

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
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Simple soil moisture alarm circuit diagram using 1.5V battery
Posted inMeters & Detectors

Simple soil moisture alarm circuit diagram using 1.5V battery

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…
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