Infrared Motion Sensor Schematic Diagram

Here is a motion sensor schematic diagram using pyroelectric sensor PIR325 in TO5 package. Infrared sensors are made ​​of crystals that produce the surface electric charge when exposed to heat in the form of infrared radiation. If the amount of radiations striking the crystal changes, the amount of charge also changes and then can be measured with a sensitive FET device built into the sensor.

Sensor element used in the motion sensor schematic diagram is sensitive to radiation through various filters so that the window is added to the TO5 package to limit the detected radiation to the range of 8 to 14mm of the most sensitive to human body radiation.

Motion Sensor Schematic Diagram.

Digital ESR Meter Schematic

Detecting defective electrolytic capacitors when they are still in the circuit is a difficult and complicated job. The use of an ESR meter to it will allow the technicians to identify the damage is easily and quickly. This device is very important to measure the characteristics of electrolytic capacitors in the form of equivalent series resistance (ESR).

If you want to have an ESR meter can be through purchase in the form of a kit or DIY or buy a device ready to use it online like at Amazon. If you want a simple one, you can make it follow the instructions of the device schematic from tech info on the internet.

ESR Meter

LM35DZ Temperature Sensor Schematic Diagram

Here is a circuit of temperature sensor, only designed to automatically control the temperature with high accuracy. Circuit switching miniature relay ON or OFF according to temperature detected by single-chip temperature sensor LM35DZ. Temperature is controlled by circuitry that 0-100 degrees Celsius.

LM35DZ found when the temperature of a certain level (determined by VR1), the relay is activated crossing. When the temperature drops below a set value, the energy of the relay. The sensor circuit can be activated by AC or 12V DC or battery (100 mA minimum). Here is a simple temperature sensor circuit.

Temperature Sensor Circuit

Motion Sensor Schematic Diagram

Here is a motion sensor schematic of the X-10 controlled by the PIC12C508 from Microchip, the type MS14A EagleEye Motion Sensor. This motion sensor consists of an RF transmitter unit, two LEDs, two push-buttons, and a motion sensor pyroelectric and powered by 2 AAA batteries.

In this motion sensor schematic consists of two detector circuit, which is a light/sun sensor using a standard Cadmium Sulfide cell to detect levels of light, placed as the outdoor sensor. And as a motion detector used Infrared (IR) sensor using a pyroelectric sensor.

Motion Sensor Schematic Diagram