The Emergency Lamp
They are all Chinese.
- they either hold a little load, or have large sizes;
They are almost not for sale now.
The task is to help calculate the electrical scheme and its elements.The concept of the scheme I add to the picture (Don't beat strongly - I have not been engaged in radio technology for a long time).Essence: the scheme is submitted by the variable current (7) from the general electric network.On the way, some logical element or sensor (2) is checked against in the entrance chain: if the remover is closed, the resistance will be endless, but if the remover is closed - the resistance will be large, but that can be recorded.The element (2) transmits the control signal to the switch (transistor) 4, and the one locks the chain if the switch is locked.The variable current is directed to the inverter (1), its realization can be different: a transformator, a stabilitron, a condensator with a drussel, etc.The main limitation of implementation is the size: the entire scheme (except the battery and LEDs) should have the size of no more than the cylinder box.After the inverter, the constant current moves to the battery (8) - the connection of 3-4 small batteries at 3.7V.The battery chain shut down some diode or other element (3), which will break the chain if the voltage falls to a certain value (so that it does not break the battery to zero).The battery lives the LED connection (3-6 pieces - to be bright light, as from the usual energy-saving lamp at 15W), but since there may be uncompatibility by current and voltage, it will need to include another resistant (5) or any scheme for equalization.This is the scheme.I’m probably the first to be so intelligent here, but in the shopping schemes on the forums I’ve somehow not found what I need.The scheme on the picture is conditional.I think this is an elementary task for experienced radio electronics, so this task won’t take a lot of time.And so, this scheme is calculated on a regular apartment network, which is no longer able to corroborate the DBG.
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