Project Solutions (2011/08/07)

Vehicle Battery Jogger-keep your battery fresh and young （3）

Published:2011/8/7 22:56:00 Author:Phyllis

By Karel Walraven Safety Most people don’t realise that despite the modest voltage, working with vehicle batteries can be quite hazardous. This is because such batteries can deliver especially high currents. That means you have to be especially careful with metal objects in the vicinity of a charged battery. A dangerous short circuit can be caused not only by a simple screwdriver or...   (View)

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Precision Function Generator: MAX038 goes SMD （2）

Published:2011/8/7 22:50:00 Author:Li xiao na

By Klaus-Jiirgen Thiesler MLC capacitors Solid, leaded, capacitors in the microfarads range are every expensive, inaccurate and bulky components and it is not surprising to see they are rarely used these days. SMD multilayer ceramic chip capacitors (MLCCs) are much more accurate, tiny and cheap mainly because they are manufactured by the millions for use in mobile phones. Mind y...   (View)

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Vehicle Battery Jogger-keep your battery fresh and young （2）

Published:2011/8/7 22:48:00 Author:Phyllis

By Karel Walraven Operation The first 555 timer (IC1 in Figure 1) operates as an astable multivibrator and generates a continuous stream of pulses. The second 555 is a monostable multivibrator that is triggered on each negative edge of the pulses coming from its companion. As a result, i...   (View)

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Vehicle Battery Jogger-keep your battery fresh and young （1）

Published:2011/8/7 22:43:00 Author:Phyllis

By Karel Walraven This design is a follow-up to the triumphant ’Battery Revitaliser’ project published in the September 2001 issue of Elektor Electronics. From numerous reader responses, it appears that defective batteries are a common problem. Since prevention is naturally better than cure, here we ...   (View)

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Four in a Row: Play against each other or against the micro! 3

Published:2011/8/7 22:41:00 Author:Amy

By Steve Teal Construction You should choose a suitable case before starting with the construction of the PCB. We’ve chosen a Pactec case without a battery compartment. The bare PCB can then be used as a drill template. We have added some extra holes for this in the centre of the switches. Try to keep the height of the populated PCB as low as possible. The LEDs and switches should r...   (View)

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Precision Function Generator: MAX038 goes SMD （1）

Published:2011/8/7 22:31:00 Author:Li xiao na

By Klaus-Jiirgen Thiesler Although surface-mount parts are not the easiest to handle, the reward in test and measurement equipment is increased accuracy. Integrated precision function generator type MAX038 is now an o...   (View)

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Analog University: attend National Semiconductor lectures

Published:2011/8/7 22:16:00 Author:Li xiao na

By David Daamen Sure, the Internet contains thousands of electronic circuits covering equally vast numbers of applications. That’s all very well, but King Shallow & Sgt Superficial often rule and it may take a lot of searching if you really want to know all the ins and outs of a certain design aspect. Of course, enough t...   (View)

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