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“Cool Electronic Circuits”的内容更新

累计：56 篇（自 2009-06-26 起）

更新：约2篇/月，最后更新863 天前

Cool Electronic Circuits

Variable DC Power Supply LM317

this dc power supply circuit is adjustable using ic voltage regulator lm317. lm317 is a versatile and highly efficient 1.2-37v voltage regulator that can provide up to 1.5a of current with a large heat sink. it's ideal for just about any application. this was my first workbench power supply and i still use it.since lm317 is protected against short-ci... (311 天前)

http://inezha.com/w/juzuelu

Cool Electronic Circuits

DC- DC Converter 12V to 24V

this simple circuit is a dc-dc converter that converting up 12v source to a 24v. it can be used to run radios, small lights, relays, horns and other 24v accessories from a 12v vehicle with a maximum draw of about 800ma.this dc-dc converter can be used to charge one 12v battery from another, or step up the voltage just enough to provide necessary over... (311 天前)

http://inezha.com/w/hx8nqlt

Cool Electronic Circuits

NiCad Battery Charger

this battery charger circuit is designed for recharging nicad batteries based on an ac-powered current source method. it can crank out as much as 1 amp and can be modified to go even higher by choosing different devices for q1. since this circuit uses ac line voltages and currents, please exercise extreme caution during assembly, turn-on, and test.ni... (311 天前)

http://inezha.com/w/g8h39lc

Cool Electronic Circuits

Laptop Power Supply for Car 95W

a laptop or notebook computer user while they are away from the home or office knows that sooner or later they will need to plug into a mains outlet to top up the batteries. the car cigarette lighter socket in the car is also an electrical outlet but it can only supply 12 v. that’s no problem for the laptop power supply described here.the laptop po... (311 天前)

http://inezha.com/w/upzloly

Cool Electronic Circuits

Power Converter 12 VDC-220 VAC 50W

the power converter circuit is aimed to convert 12 vdc to 220 vac and the process known as inverter. by inverting process will produce a 50w power converter that would supply different small appliances.the dc to ac inverters are widely used in rural electrification the require ac power which includes solar home systems, health clinics, and community ce... (311 天前)

http://inezha.com/w/zip4xlp

Cool Electronic Circuits

VHF FM Receiver TDA7000 88-108 MHz

here is a very simple vhf fm receiver which is little more than a single ic and a "slack handfull" of capacitors. note that an external amplifier is a really necessity since the unit only delivers about 70mv of af. see high power fm wireless microphone transmitters, probably because it is so simple too.the 10k resistor (*) is only required if you w... (311 天前)

http://inezha.com/w/qafzgof

Cool Electronic Circuits

High Power FM Wireless Microphone

this fm wireless microphone has been a very popular project with beginners and experienced constructors alike. it has been used inside guitars and as the basis of a remote control system. i do however, receive many requests for a higher powered circuit and better microphone sensitivity.this high power fm wireless microphone has a better frequency stab... (311 天前)

http://inezha.com/w/2s49eom

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