Test equipment circuits
#test equipment
#measurement
#instrumentation
#circuit testing
#diagnostics
#signal analysis
#voltage measurement
#current measurement
#frequency measurement
#oscilloscope
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Interface Circuit for PC Soundcard Oscilloscope
For simple electronic circuits, it may be sufficient to gain qualitative insights on dedicated electrical signals. This interface circuitry allows the line-in input of a standard PC sound card to be utilized as a 2-channel oscilloscope. Although this setup does...
Mini Oscilloscope schematic
Probably the best advantage is its very small size and the fact that it can run off the power supply of the circuit being tested. Although it has a low frequency range, it can still be used for most circuits....
Test-Measurement 4
In circuit diagrams provided in equipment manuals, voltages at various points in the circuit are typically indicated. A deviation from these specified values suggests that a component has failed and can help in identifying faulty areas. Specifications include: D.C. Voltage...
Oscilloscope-preamplifier
This circuit provides approximately 20 dB of voltage gain with a frequency range from 0.5 to 50 MHz. The low-frequency response of this circuit can be extended by increasing the value of the 0.05 µF capacitor or by removing the...
grid frequency
Wall sockets provide power in the form of a 230-volt sine wave, operating at a frequency of 50 hertz. This means that the voltage alternates between positive and negative at a rate of 50 full cycles per second. Different countries...
Current-shunt-amplifier
This circuit measures the power supply current of a circuit without using a current shunt resistor: R1 is only 3 cm of #20 gauge copper wire. A length of the power distribution wiring can be used for R1. The MAX420's...
Oscilloscope Preamplifier Circuit
An oscilloscope front-end amplifier can be constructed using low-cost transistors and video amplifier integrated circuits (ICs). This preamplifier utilizes a FET input along with compensated attenuators, achieving an approximate bandwidth of 100 MHz, which is sufficient for most general-purpose oscilloscopes.
The...
EIGHT CHANNEL COMPUTERIZED 3SUP1 SUP SUB2 SUB DIGIT_VM
Displays up to eight different DC voltages on a CRT terminal of a microprocessor under keyboard control, using BASIC commands and a BASIC routine provided in the article. Utilizes a modified Motorola MC14433 dual-lamp integrating analog-to-digital converter. An unknown voltage...
Digital-ProfiLab 4.0
Digital-ProfiLab was designed for measurement and control applications, combining features like circuit and logic simulation, front panel design, and hardware control to one powerful tool. Incoming signals from external devices may be processed and displayed. A circuit editor is used...