This is one simple but highly useful circuit for you. Most of us use different types of Rechargeable batteries in Portable devices, Inverter, Emergency lamp etc. If the battery is deeply discharged, sometimes it will not get fully charged later. This is the most common reason for the failure of Emergency lamp. So we need an indicator to show the safe level of battery voltage. It is too simple to make it and needs only three components. Just hook up it in the battery and it will remind you when it needs charge.
Continue reading “Battery Charge Indicator. Simple Design 5”
Most of the CMOS circuits need a well regulated power supply for proper working. Regulated power supply is the DC source that gives constant Voltage and Current in its output irrespective of the input changes. Various types of power regulation methods are available which depends on the use and type of the circuit. Here explains three Regulated power supply designs.
Continue reading “Regulated Power Supply. Design Note 33”
Zener is a special kind of diode that is used in voltage regulation. Zener of different voltage ratings are available. Zener requiresa series resistor to drop current across it. See how a Zener based power supply is designed. Continue reading Zener diode selection