Kinds of Electronic Measurement and Functions

Electronics Measurement and Functions | electronic measuring instrument (electric) was the instrument / tool used to measure electrical quantities such as electrical resistance (R), a powerful electrical current (I), an electric potential difference (V), power (P) , and others. There are two types of gauges are analog gauges and digital gauges.
Here are a variety of electrical measuring instruments:

    Ampere-meter
    Voltmeter
    Ohm-meter
    Multimeter Analog / Digital
    Oscilloscope
    Generator functions
    Digital Signal Analyzer
    Spectrum meter
    etc.
1 ampermeterAmmeter is an instrument used to measure electric current strength both for DC and AC power is in a closed circuit. Ammeters usually lined with fitted electric element. How to use it is to insert directly into the circuit ammeters.
Ampermeter
Ampermeter
Ampermeter
Ampermeter zero position in the middle2. VoltmeterVoltmeter is an instrument / tool to measure the voltage in an electrical circuit. Voltmeter arranged in parallel to the location of the components measured in the circuit. The tool consists of three copper plates mounted on a bakelite which are arranged in a glass jar or plastic. Outside the slab acts as the anode, while the middle one as the cathode. Generally these tubes measuring 15 x 10cm (height x diameter).
Electronic Measurement and FunctionsVoltmeter3. Ohm-meterOhm-meter is an instrument for measuring electrical resistance, the power to resist the flow of electric current in a conductor. The amount of force that is measured by the device resistance is expressed in ohms. Ohm-meter tool uses galvanometer to measure the amount of electrical current passing on the electrical resistance (R), which is then calibrated to units of ohms.
Kinds of Electronic Measurement and FunctionsOhm-meter4. Multitester Analog / DigitalMultimeter is a tool for power mngukur often known as VOAM (Volt, Ohm, Ampere meter) to measure the voltage (voltmeter), resistance (ohm-meters), and current (ampere-meter). There are two categories of multimeters: digital multimeter or DMM (digital multi-meter) (for a new and more accurate measurement results), and analog multimeter. Each category can measure AC power, or DC power.Kinds of Electronic Measurement and FunctionsDigital multitesterKinds of Electronic Measurement and FunctionsAnalog multitester5. OscilloscopeOscilloscope / oscilloscope is a measuring tool that serves to project electronic form of electrical signals that can be seen and studied. Oscilloscope equipped with a cathode ray tube. Devices emitting electron electron beam projecting into the cathode ray tube screen. Spotlight electron imprint on the screen. A special circuit in the oscilloscope has repeatedly spotlight moves from left to right. This repetition causes form a continuous signal that can be learned.
Kinds of Electronic Measurement and Functionsoscilloscope6. Generator functionsThe generator function is a measure that is used as a source of the necessary trigger, is part of the equipment (software) electronic test that is used to create an electric wave. These waves can be repeated or one-time.
Kinds of Electronic Measurement and FunctionsGenerator functionsAnalog function generators usually generate a triangle wave as the basis of all the outputs.

Scheme Series Car Alarm Siren Police

Scheme Series Car Alarm Siren Police | siren circuit in the figure is a series of the police car siren alarm. Consists of 2 pieces of IC TL 555 as astable multivibrator, VR1 and VR2 will set the alarm sound output so you will be able to set / adjust the tones produced are similar to real police car alarm.
Schematic circuit Police Car Alarm Siren
If the dihasikan otput sound speakers less than the maximum, you please add such mini power amplifier 8 watt amplifier (LM383 Or TDA2002) or can use other amplifer fit your needs. You can cut the siren output circuit above and used as the input of the amplifier. Have a try!!!