You may only need to wear it at night, but it will allow your tooth to tighten up on its own in these cases. If you have gum disease, then you will likely need a deep cleaning. Since gum disease creates pockets of bacteria and infection between the tooth and gum itself, this can lead to loose teeth. By cleaning the gums and removing these pockets, your gums will become healthier and they will tighten up on the teeth again.
The next step for surface mount led soldering to a circuit board is the manual reflow process. With one hand, you must reflow, or heat up the solder on the circuit board pad (where previously applied). As you re-heat this solder, slide the LED onto the center of the pads with your opposite hand.
LED Circuit: PNP transistor is used as a switch here. As long as the mains power is ON, the positive from the supply is maintained at the base of the transistor, keeping it switched OFF. This prevents the voltage from battery reaching LEDs. The moment, ac mains power is lost, the positive voltage at the transistor goes off, which makes the transistor biased though R1. The voltage from battery now passes through transistor lighting up the LEDs. Hope this helps in basic understanding of the circuit and the use of transistor in emergency light. As said, this is one among different possibilities. Written Sep 25, 2013 â¢ View Upvotes â¢ Answer requested by 1 person.