Master-clock control and regulator circuit

There are issues with simulating this circuit on Proteus. Please review it to ensure no errors were made. The user is also a novice. The circuit simulation in Proteus can often present challenges, especially for those who are new to the...

Digital Clock

The complete circuit diagram is shown in Figure 1. The heart of the system is IC2, National's MM5402 clock chip, which is a MOS monolithic large-scale integrated circuit. Its pin configuration is illustrated in Figure 2. The supply is derived...

Precision-full-wave-rectifier

This circuit provides accurate full-wave rectification. The output impedance is low for both input polarities, and the errors are small at all signal levels. It is important to note that the output will not sink heavy currents, except for a...

Precision-threshold-detector

This circuit requires low noise, stable offset voltages, high open-loop gain, and high speed. These requirements are fulfilled by the HA5147. Standard variations of this circuit can be easily implemented using the HA-5147. For instance, hysteresis can be introduced by...

Regulator-current-source

The circuit powers the load through the input of the regulator rather than its output. Due to the presence of a constant dummy load (R1) at the regulator's output, it attempts to draw a constant amount of current, regardless of...

Pulse-amplitude-discriminator

A 1-V amplitude pulse activates SCR1, but lacks sufficient amplitude to activate SCR2. A 3-V input pulse is delayed in reaching SCR1 due to the 10-KΩ and 0.001-µF integrating network. Instead, it activates SCR2, subsequently increasing the common emitter voltage...

Adjustment-free precision summing amplifier

This circuit generates continuous outputs that depend on multiple input variables. The circuit in question typically employs a combination of operational amplifiers (op-amps), resistors, and potentiometers to achieve its functionality. The outputs can be tailored based on the variations in...

Frequency-Ratio Monitoring Circuit

This circuit generates an output frequency that is linearly proportional to the ratio of two input frequencies. Each pulse of the bias frequency will open a switch for a period equal to half of the second input frequency, allowing a...

Clock Circuit Design

The high voltage supply will function, but for safety and to prevent accidental damage during troubleshooting with an oscilloscope, it is highly recommended to use an isolation transformer on the 120VAC input. A small 1:1 transformer rated at 30VA is...