How to Build a 12 Volt Gel Cell Charger Circuit Diagram. Recently, a fellow amateur was looking for a gel cell charger which would first charge at a fixed rate and then later switch to a trickle charge when the cell was fully charged. After reviewing several catalogs and web sites, the MAX712 IC was...
Simple 1.5 Volt LED Flashers Circuit Diagram
The 1.5 Volt LED Flashers Circuit Diagram below operate on a single 1.5 volt battery. The circuit on the upper right uses the popular LM3909 LED flasher IC and requires only a timing capacitor and LED.
1.5 Volt LED Flashers Circuit Diagram
The top left circuit, designed by Andre...
How to build a 1-wire Barometer Circuit Diagram
For barometric pressures the MPX4115 output voltage ranges from about 4.25 to 3.79 volts at sea level, and about 2.77 to 2.45 volts at 10,000 feet. Most of this range is above the active voltage range of a 5 volt opamp circuit. In effect the sensor voltage is referenced to the power supply,...
Basic Audio Amplifier Circuit Diagram
Basic Audio Amplifier Circuit Diagram
BASIC_AMPLIFIER.CIR
Let's explore the basic DNA of an audio amplifier. This internal structure not only describes the majority of audio amps today, but also the innards of most op amps today. The design of these amplifiers...
