I have recently bought a soldering iron, because I would like to take electronics up as a hobby, but I have no idea where I could buy the electronic components (wires, motors, etc).
Maplins if you are in the UK
electronic components. Avnet OnDemand is a web based video network for the technology industry. Perfect for OEMs, resellers, vars, engineers, sales and technical users of technology products and services. Visit http://www.avnetondemand.com.
Duration : 0:4:52
I am using a two-resistor model for modeling an electronic component thermally. Do any of you know of a good worked example that I could use as a reference?
A germanium diode has a junction temperature not to exceed 100C. How many watts will this diode dissipate at the maximum junction temperature?
Given:
Thermal resistance junction to case Trjc = 0.7C/watt
Thermal resistance case to ambient Trca = 40C/watt
Maximum ambient temperature = 30C
Solution:
Tj – Ta = q x (Trjc + Trca)
100 – 30 = q x (0.7 + 40)
70C = 40.7C/watt x q(watts)
q = 100/40.7 = 1.7 watts
If you know q and want to calculate Tj
Tj – Ta = q x (Trjc + Trca)
Tj – 30 = 1.7 x (0.7 + 40)
Tj = 1.7 x (0.7 + 40) + 30
Tj = 99C (with a little rounding error)
Heatsink and semiconductor manufacturers may have other examples in their application information.
If you are a new ham radio operator or studying for your test, this will help you to identify some of the most common electronic parts found in many electronic devices you may be troubleshooting or building. I did not include surface mount devices here.
Duration : 0:8:4
I have been teaching myself electronics for a while now and have been going to my local RadioShack for parts, but they don’t have a very good selection and their prices are rather high. I am wandering if there is anywhere else in Minnesota (near the Twin Cities) that sells electronic components. I know I could get components online but I would prefer not to.
There is:
BH Electronics Inc at 604 Michigan Rd, Marshall
There is also:
The Bergquist Company
18930 W. 78th Street
Chanhassen, MN
http://www.bergquistcompany.com/
What are the following and what are their applications?
Power supply
Trnsformers
Modems
PLL
VCO
SEMICONDUCTORS
TRANSISTORS
DIODES
Thanks Gabe
Power supply: Typically converts AC (alternating current) power from an outlet to DC (direct current) power. In general, converts power from one form into a form that is usable by a device’s circuits.
Transformers: Converts an AC voltage from one voltage to another voltage using two sets of coils wound around a common magnetic (typically iron) ring.
Modems: This stands for modulator/demodulator. It converts signals to be sent, either digital or analog, into signals that can be transmitted over a network (a.k.a. modulated), and receives sent signals that were modulated by demodulating them. The common high-pitch whine of a modem (if you pick up a phone line while it’s in use) is a series of bytes being turned into frequencies that can be transmitted over a phone line, because a phone line can only transmit frequencies, not constant voltages.
PLL: Phase locked loop. These are used all over the place for way too many purposes to list here. A main purpose is to detect a frequency within a signal.
VCO: Voltage controlled oscillator. These are used to generate frequencies. For telecommunication, these produce tones that we can here.
Semiconductors: These are electronic components that use a special property of some materials. They are neither conductors nor insulators. Rather, by applying electric fields and small currents, they can be made to conduct, by modifying the energy levels in the electron shells of the atoms that make up the material. Silicon is the most commonly used semiconductor.
Transistors: These are a semiconductor device. They have three wires (pins) coming out of them. By applying a small current between two of the pins, one is able to control a larger current through the third pin.
Diodes: These are also semiconductor devices. They have two pins coming out of them. They have the special property that electrical current can only flow one direction through them.
I am having a hard time trying to find a database source or a company where I can look at a datasheet, view the pinout diagram, or access a downloadable pdf file for specific electronic components? There’s got to be website addresses that supply information like that for electronics hobbyists like me, and for professionals.
normally you would goto the manufacturers website to obtain these schematics – that is if the chips or components are what they consider public access – some are priveleged to manufacturers (ie: sony does nto want you having access to the schematic of chips manufactured by motorola)
google the component make or model number you might find them
CAPACITORS
Design, prototype and troubleshoot faster by quickly decoding new and vintage discrete electronic component markings.
Simply click on the colors or markings to match your component and its values are automatically decoded and displayed.
Simultaneous values are displayed in Ohms, Kilo Ohms and Mega Ohms for resistors; Pico Farad, Nano Farad and Micro Farad (uF pF nF) for Capacitors; Micro Henrys, Milli Henrys and Henrys (uH)for inductors.
Create the components you need from what you have at hand with series parallel calculators for capacitors, resistors and coils.
The automated Ohms law wheel quickly converts amps to watts to current to resistance and vice versa. It also includes volt amps (VA).
Over 85 decoder-calculators in one program, at the bench or in the field A MUST for any seasoned tech or student.
Used by Schools, Universities, Military and Government.
Electronics Genius© Electronic Component Reference Software is for Windows 95,98,NT,ME,2000,XP and Vista ElectronicsGenius.com Electronic Repair Software
Duration : 0:2:25
I am planning to running a business and sell electronic components. I hear that Chinese electronic components are very cheap, Especially IC. is that true, can anyone advice me if I should imported from China, if so, how can I find the best seller.
I am not in USA but I imported electronic components from China. The price is pretty good. But someone sell so call retread electronic components, in the same price of new products. I find a university student Tony in Shenzhen to help me to purchase electronic components for me and export that by the export company, of course, pay him a small percentage. That really help me to buy the right goods in right price also right quality. If you wish, try to contact him.
qinyongzzz@yahoo.com.cn
good luck
Is there a good place to pick up electronic components in NYC (or nearby areas) that’s not Radio Shack?
You are usually better off using mail order, such as digikey.com. They can ship overnight, and have a vast selection of high quality components at very good prices.
The only time to use an electronics store would be if you forgot something, and cannot wait until tomorrow for it, yet the electronics store is both open and has what you need. Or maybe if you need to see and hold a part before you buy it, maybe some kind of box or enclosure. But remember, the mail order houses are happy to exchange parts if need be.