Ok, so here we see a very simple solar charger circuit that works without any ICs. We use only transistors and it automatically cuts off when the battery is full. […]
Dry Run Protector Circuits using Transistors only
The basic dry run protection circuits using BJTs shown here provide simple ways to check for low water levels in an underground tank but without needing to use probes inside […]
Water Level Controller Circuit using only Transistors
I have got this gadget called an automatic water level controller circuit. It’s pretty neat, it checks if the water in my tank is too low or too high and […]
Battery Status Indicator Circuit using two Transistors only
Often a backyard electronic system could become imperfect as a result of a perishing battery. If the battery voltage is no more than 9V for a 12V operated system, the […]