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Power supply circuit diagrams
August 4, 2010
This circuit can be useful to detect if the load of any battery charger or plug-in adapter supply is not properly connected. The load can be a set of batteries to be charged or any... [more]
circuit from:http://www.extremecircuits.net/2009/08/broken-charger-connection-alarm-circuit.html
August 4, 2010
Don't get caught with a flat battery; this easy-to-build circuit can cut off the power to a 12V fridge or car stereo system if the battery voltages drops below critical level. Electric fridges in vans... [more]
August 4, 2010
Almost all 24V power systems in trucks, 4WDs, RVs, boats, etc, employ two series-connected 12V lead-acid batteries. The charging system can only maintain the sum of the individual battery voltages. If one battery is failing,... [more]
circuit from:http://www.extremecircuits.net/2009/12/battery-equality-monitor-circuit.html
August 4, 2010
This is a small electronic switch that connects a battery to the equipment for a certain amount of time when a push-button is momentarily pressed. And we have also taken the ambient light level into... [more]
circuit from:http://www.extremecircuits.net/2010/04/battery-saver-circuit-diagram.html
August 4, 2010
A Battery-status Indicator circuit can be useful, mainly to monitor portable Test-gear instruments and similar devices. LED D1 flashes to attire the user's attention, signaling that the circuit is running, so it will not be... [more]
circuit from:http://www.extremecircuits.net/2010/01/flashing-led-battery-status-indicator.html
August 4, 2010
Protect your expensive batteries from discharge damage with this mini-sized electronic cutout switch. It uses virtually no power and can be built to suit a wide range of battery voltages. [more]
August 4, 2010
Unlike many units, this battery charger continuously charges at maximum current, tapering off only near full battery voltage. In this unit, the full load current of the supply transformer/rectifier section was 4.4A. It tapers off... [more]
circuit from:http://www.extremecircuits.net/2009/12/unlike-many-units-this-battery-charger.html
August 4, 2010
Most mobile chargers do not have current/voltage regulation or short-circuit protection. These chargers provide raw 6-12V DC for charging the battery pack. Most of the mobile phone battery packs have a rating of 3.6V, 650mAh.... [more]
circuit from:http://www.extremecircuits.net/2009/12/friendly-charger-schematic-for-mobile.html
August 4, 2010
Most off-the-shelf car battery chargers cannot not be left connected to the battery for long periods of time as over-charging and consequent battery damage will occur. This add-on circuit is placed in series with the... [more]
circuit from:http://www.extremecircuits.net/2010/05/battery-charger-regulator.html
August 4, 2010
The SLA battery is charged from the vehicle’s battery. When the engine is running, the voltage remains fairly constant, which greatly simplifies the charging circuit. If the SLA battery is fully charged, any further charging... [more]
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