How To Make Your Own Electric Extension Board | Extension Box Wiring At Home

Electric Extension Board, Extension Box Wiring At Home

 

Presented here is an instructable to Make Your Own Electric Extension Board. In this video step by step instructable, I will show you wiring in the Extension Board. Create an extension box in your home which is cheap but very good for Digital Set Top Box to the audio system, computer to any other device running on electronic power.

Material Required for Electric Extension Board

1. Plastick Switch Board
2. 3-Pin Socket
3. 3-Pin Plug
4. 2-Pin Socket
5. 3-Core wire

How to Make Simple Water Level Indicator Alarm at Home | Homemade Water Tank Alarm DIY Project

Simple Water Level Indicator Alarm or simple transistor based water level indicator circuit is very useful to indicate the water levels in a tank. Whenever a tank gets filled, we get alerts on particular levels. Here we have created 4 levels (low, medium, high and full), we can create alarms for more levels. We have added 3 LEDs to indicate the initial three levels (A, B, C), and one Buzzer to indicate FULL level (D). When tanks get filled completely we get beep sound from Buzzer.

 

Surge Protection Circuit for Power Supply by IC 555

Surge Protection Circuit for Power Supply

Surge Protector circuit is simple with timer IC and it can give effective solution for protecting your valuable and sensitive electric/electronic systems. Surge typically occurs when power returns after a power-cut (blackout) and connected equipment receives a surge of electricity at an over-voltage level, which can be very damaging. Usually, power-back surges are created by the utility, when it restores supply at an above normal voltage level in order to compensate for the demand as connected equipment restarts at the same time. The author took this little circuit personally to protect numerous lab equipment.

 

 

The Surge Protector circuit is designed to be constructed in a small module structure with an onboard electromagnetic relay as the primary switching device. The design is centered around (again) the famed 555 timer, wired as a bi-polar latch switch with its two comparator inputs tied together and biased at 1/2 Vcc through a resistive-potential divider. Since the threshold comparator will trip at 2/3 Vcc and the trigger comparator will trip at 1/3 Vcc, the bias provided by the resistors are centered within the comparators trip limits. The module does need a source of external power for operation, and so a “clean” 5v dc supply is preferred here as the power supply for the entire circuit.