Solar Light For A Portable Toilet Using PIR sensor and LM317

  Author: T.K Hareendran Portable toilets, which are self-contained and can be installed almost anywhere, are more costly than permanent outdoor toilets but offer numerous key advantages. Today, portable toilets are often encountered in outdoor settings such as construction sites, farms, campgrounds, and even streets. Solar energy is well suited for situations where illumination is needed in portable toilets that …

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12V Lead Acid Battery Charger Circuit With Overcharge Protection And Float Charge | Up to 10Ah Battery

Author: Fayaz Hassan  When the battery reaches the maximum charging voltage defined by the circuit, most battery chargers cease charging it. This 12V battery charger circuit charges the battery at a certain voltage, known as absorption voltage, and after the maximum charging voltage is reached, the charger switches to float voltage to keep the battery at that voltage. The kind of …

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Dual Tone Power Failure And Resumption Alarm Circuit Using Timer Ic And A 9V Battery

Author: Manikandan KJ ©kjmindia.in Here is another audio annunciator used in factories, industries, hospitals, auditoriums, theatres, etc. to indicate the power failure and resumption. The circuit will give a long beep on power resumption and an intermittent beep when power fails. The power failure alarm circuit that I posted earlier will activate the alarm (continuous tone) only for a few …

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Automatic Water Level Controller Circuit With Dry Run Protection | For Sump & Overhead Tank | Transistor Based

   Author: Manikandan K J  Circuit Sponsor: kjmindia.in Water level controller is necessary for many reasons. Water level can be monitored and controlled automatically without any human intervention. Thus, it saves water wastage, electricity and time. This can be used both in industries and houses. The circuit I am going to share in this post controls water level in the overhead …

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5 Minutes Timer Circuit To Turn Off Electrical Devices

A timer circuit is used to generate an output pulse after a given period of time. This time can be in the order of seconds or minutes. The length of the output pulse can be varied by changing the frequency at which the clock signal is applied to the timer’s input pin. Time interval can be measured in seconds, minutes, …

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Connection Details Of 6 Led Water Level Indicator

SENSOR 1 – F(L) – Used for water flow sensing 2 – +ve supply – Used for water flow sensing 3 – +ve supply – Kept inside the tank but should not touch the bottom of the tank. 4 – First Level 5 – Second Level 6 – Third Level 7 – Fourth Level 8 – Top Level Both 1 …

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6v Battery Charger Circuit With Auto Cut Off Using LM317 And BC547 | battery charging circuit with auto cut off

The Lеаd-асіd bаttеrу іѕ perhaps thе mоѕt wіdеlу uѕеd tуре оf  rесhаrgеаblе bаttеrу.Thіѕ is bесаuѕе оf іtѕ соѕt еffесtіvеnеѕѕ and іtѕ сарасіtу tо deliver vеrу hіgh currents аѕ іt hаѕ аn еxtrеmеlу lowinternal rеѕіѕtаnсе.Lеаd-асіd batteries should bе сhаrgеd uѕіng current lіmіtеd voltage regulator circuit,whereas Ni-cd bаttеrіеѕ ѕhоuld bе сhаrgеd аt constant сurrеnt. Here іѕ a circuit whісh саncharge a 6V,4.5AH …

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