After a long period of time in which I forgot about the popular top 10 electronic circuits of the month, her comes the October 2012 one.
October 2012 Top 10
- Automatic battery charger
12 volt Lead Acid battery charger that shut off the charging process once the battery attains full charge.
- Solar charger
A solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries using the solar energy power.
- 220V LED
This is the simple version of a white LED lamp that can be directly powered from mains.
It can give ample light even for reading purpose.
- Solar battery charger
It is intended for charging lead-acid batteries, but may also be used for charging any battery at a constant voltage. Voltage output is adjustable.
- Battery level indicator
This battery level indicator offers (5) LEDs that light up progressively as the voltage increases.
- Gas leak detector
Here is a gas leak detector circuit that detects the leakage of LPG gas and alerts the user through audio-visual indications.
- Solar inverter
It harvests solar energy to replenish 12 volt Inverter battery. It has auto cut off facility to stop charging when the battery attains full charge. The charger uses a 24 volt solar panel as input.
- Muscle stimulator
It is useful to relieve headache and muscle pain and revive frozen muscles that impair movement.
- Ultrasonic pest repeller
This electronic pest repellent generates powerful ultrasonic signals to repel pests.
- Solar garden light
This Outdoor LED Solar Garden Lights project is a hobby circuit of an automatic garden light using a LDR and 6V/5W solar panel.