solid state charger circuit
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Charger circuit V
The charger operates with a charging voltage of 2.4 V per cell, aligning with the recommendations of most manufacturers. The circuit delivers a charging voltage of 14.4 V (6 cells at 2.4 V per cell) in a pulsed manner at...
dyi setup and debugging guide
This page discusses the differences between assembled Open USB FXS dongle boards and DIY boards. While the assembled boards are fully tested and quality control approved, DIY boards may encounter various issues during assembly. Fortunately, most of these issues can...
Positive and negative from a battery LT1010
A common need in many systems is to obtain positive and negative supplies from a single battery. Where current requirements are small, the circuit shown is a simple solution. It provides symmetrical +&- output voltages, both equal to one half...
Tensor Energy Coils
The concept of quadrature involves three manipulable forces rather than the two traditionally considered in electromagnetism. The electric field exhibits both positive and negative voltages, while the magnetic field consists of north and south poles. Additionally, the tempic field encompasses...
charger
The circuit was constructed on a Vero board and tested with a large electrolytic capacitor in place of a battery. A 500-ohm preset resistor determines the output voltage, while a 47k preset resistor regulates the hysteresis and establishes the voltage...
Gray Tube Replication 5
This was not simply shorting out a capacitor through the coil or the tube. However, there is a misunderstanding regarding the functionality of the tube. A discharge is not expected from the low voltage rod to capacitor C2. It is...
Power Supply for Battery Valve Radios
Many later radios utilize four 7-pin valves and require a high tension (HT) supply of 90V at approximately 12mA, and a low tension (LT) supply of either 125mA or 250mA, depending on the specific valves used. The original batteries for...
Battery voltage indication circuit
A battery voltage indication circuit that changes the status display. When the battery voltage is normal, an additional transistor drives an LED, which remains off. However, if the battery voltage falls below a critical threshold, the LED begins to flash,...
Battery-Voltage Measuring Regulator
This circuit enables a microprocessor system to measure its own battery voltage. A Texas Instruments TI43 precision shunt regulator functions as a precise reference and integrator/amplifier, measuring its own supply through voltage-dependent charge and discharge time intervals. It is important...