Sensor circuit diagrams

Automatic Light Controller Using 7806
October 3, 2010

Voltage regulator ICs (78xx series) provide a steady output voltage, as against a widely fluctuating input supply, when the common terminal is grounded. Any voltage about zero volt (ground) connected in the common terminal is... [more]

circuit from:http://www.extremecircuits.net/2010/05/automatic-light-controller-using-7806.html

Heating System Thermostat Circuit
October 3, 2010

This circuit is intended to control a heating system or central heating plan, keeping constant indoor temperature in spite of wide range changes in the outdoor one. Two sensors are needed: one placed outdoors, in... [more]

circuit from:http://www.extremecircuits.net/2009/08/heating-system-thermostat-circuit.html

Electronic Candle Blow Out Schematic
October 3, 2010

This design was developed by request of a correspondent having made a sort of LED candle and needing to switch off the LED with a puff. This simple, easy to build gadget can be useful... [more]

circuit from:http://www.extremecircuits.net/2010/01/electronic-candle-blow-out-schematic.html

Fully Automatic Emergency Light
October 3, 2010

The circuit can be divided into inverter and charger sections. The inverter section is built around timer NE555, while the charger section is built around 3-terminal adjustable regulator LM317. In the inverter section, NE555 is... [more]

circuit from:http://www.extremecircuits.net/2010/05/fully-automatic-emergency-light.html

Using LED As A Light Sensor
October 2, 2010

This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes... [more]

circuit from:http://www.extremecircuits.net/2010/05/using-led-as-light-sensor.html

On Off Touch Switch Circuit
September 30, 2010

The modern mechanic switches are improved concerning of old technology. We need however many times to replacement some old switch or to check currents bigger than the durability of certain switches or simple we need... [more]

circuit from:http://www.extremecircuits.net/2009/08/on-off-touch-switch-circuit.html

Smart Trailing Socket
September 30, 2010

This circuit consists of a Trailing Socket (also called Extension or Distribution Socket) or similar device where two, three or more sockets (depending on the box dimensions and on constructor's needs) will be powered only... [more]

circuit from:http://www.extremecircuits.net/2010/06/smart-trailing-socket.html

Water Alarm Circuit Diagram
September 27, 2010

Have you ever seen the stairs to one of the upper stories in your house turn into a waterfall? Or maybe you’ve come home to find your aquarium fish trying to swim across the carpet?... [more]

circuit from:http://www.extremecircuits.net/2010/04/water-alarm-circuit-diagram.html

Water Level Alert Circuit Schematic
September 27, 2010

This circuit will emit an intermittent beep (or will flash a LED) when the water contained into a recipient has reached the desired level. It should be mounted on top of the recipient (e.g. a... [more]

circuit from:http://www.extremecircuits.net/2009/12/water-level-alert-circuit-schematic.html

110 and 220V AC LED Voltage Indicator
September 27, 2010

This circuit has proven to be useful to indicate when the voltage in a power supply line is changing from 120V to 240Vac. It can be used in different circumstances and circuits, mainly when an... [more]