YOUR CART 0 items 
    
2024-03-29
   
Hot Search:  Anten  Yaesu CD-24  BATTERY BL-8  UV-82S  adapter sma bnc   G63  TYT TH-8600  battery GP328  0091-801-0469  bandwidth  20 channels  uv5r+  tsa-3308  surecom sw  mytetra myt-v28  
Code/Search:    Home  |   All Products  |   How to Buy  |   Payment Method  |   Post Tracking  |   My Address   |   Contact Us
  Hot News - DMM, Digital Multimeter

DMM, Digital Multimeter

A digital multimeter or DMM is one of the most widely used pieces of test equipment today. DMMs are available very cheaply and these digital multimeters can provide very high degrees of accuracy when measuring the parameters within an electronics or electrical circuit. As a result, DMMs are one of the most indispensable pieces of test equipment available today.

Digital multimeters or DMMs can measure a variety of different parameters within an electrical circuit. The basic DMMs can measure amps, volts and ohms, as the older analogue meters did, but with the ease of incorporating further functionality into an integrated circuit, many digital multimeters are able to make a number of other measurements as well.

Many of them include functions such as frequency, continuity (with a buzzer to facilitate easy measurements when looking at the circuit board), capacitance, temperature and often a number of other measurements as well.

  1. Display   The display on a DMM is normally easy to see and read. Most have four digits, the first of which can often only be either a 0 or 1, and there will normally be a + / - indication as well. There may also be a few other smaller indicators such as AC / DC etc dependent upon the model of DMM
  2. Main connections   There will be some main connections for the probes to connect to. Although only two are needed at any one time, there may be three or four. Typically these may be:
     
    • Common - for use with all measurements and this will take the negative or black lead and probe
    • Volts, ohms, frequency - this connection is used for most measurements and will take the positive or red lead and probe.
    • Amps and milliamps - this connection is used for the current measurements and will again take the red lead and probe.
    • High current - there is often a separate connection for high current measurements. Care must be taken to use this rather than the low current connection if high levels of current are anticipated
    These are typical connections for a multimeter and each model of multimeter may have its own requirements and connections.
  3. Main switch   There will usually be a single main rotary switch to select the type of measurement to be made and the range that is needed.
  4. Additional connections   There may be additional connections for other measurements such as temperature where a thermocouple will need its own connections. Some meters are also able to measure the gain of transistors, and these will require separate connections on the meter.
  5. Additional buttons and switches   There will be a few additional buttons and switches. The main one will obviously be the on/off button. Other functions including items such as peak hold may also be available

https://www.409shop.com/shop.php

Telecommunications Knowledge 

 
 

Search keyword does not accept symbols . , " ; .../ !   

HOME
  Walkie-Talkie  
foot-type-walkietalkie
  Antenna Parts
foot-type-walkietalkie

 

Accessory for Walkie-talkie
foot-type-walkietalkie
  SURECOM Product Line
foot-type-surecom
  foot-earpiece foot-speaker-mMic foot-adaptor foot-power-supply
R
E
P
E
A
T
E
R
foot-repeater repeater cable foot-power-supply foot-dummy-load
SURECOM new Product line how-to-choose-earpiece   how-to-order-from-409shop
lexuma Shipping post  

  

Why Choose 409shop.com?

    -Over 10,000 Radio products
    -Extremely low prices
    -Timely refunds and replacements
    -Worldwide free shipping (except F.O.B.)

 

Follow us on:

409shop-facebook 409shop-you-tube 409shop-twitter.com instagram.com-409shop plus.google-409shop SKYPE-409shop 

Our Company

Learn & Support

Customer Service

Partner With Us

Home

Software Downloads

PAY Method

Reseller Contact

About Us

Technical Support MAP

Post Tracking

Supplier Contact

My Company

SHOPPING FAQ

Privacy Policy

Affiliate Program

News 

Exchange/Refund
/Return
 Policy

Repair Return Address

寻求供应商

Authority of AllSit Map

Tax Policy

Contact Us

--


 

   409shop Group: SURECOM | DAXSHINE | 409shop-TWO-WAY-RADIO | 409shop-moibleHKTDC | 對講機香港代 409shopradio 
   Quick buy: Buy Earpiece | Buy Speaker/Mic | Buy Antenna | Buy Adaptor | Buy UV5R 3800MAH battery | Buy SURECOM PRODUCT 
   Friendly Links 

walkie-talkie ,對講機牌照,DMR數碼對講機,cb對講機,motorola對講機香港 ,motorola數碼對講機,香港合法對講機,motorola對講機香港代理,motorola, t8對講機 ,motorola對講機耳機, 免費諮詢 , 409shop專業無線對講機生產 

google-site-verification: google6cffa68deb0f3230.html

Copyright © 2024 409shop,walkie-talkie,Handheld Transceiver All Rights Reserved.