circuit spectrum analyzer
#spectrum analyzer
#frequency measurement
#signal analysis
#FFT
#RF measurement
#audio analysis
#oscilloscope
#test equipment
#electronics lab
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dual-trace scope switch
The switcher output connects to the single vertical input of the oscilloscope, while a sync line from one of the inputs is routed to the oscilloscope's external-sync input. The frequency response of the input amplifiers reaches 300 kHz across the...
Four-Channel Oscilloscope Adaptor
This circuit allows for the simultaneous display of four signals using a single channel of an oscilloscope. It sequentially switches each input to the output with some signal processing in between. It is designed for low-frequency signal measurements and does...
Oscilloscope triggered sweep circuit
The circuit's input operational amplifier triggers the timer, sets its flip-flop, and cuts off its discharge transistor, allowing capacitor C to charge. When the voltage across the capacitor reaches the timer's control voltage of 0.33 Vee, the flip-flop resets, and...
Ultra-Simple Oscilloscope
Simple homemade oscilloscopes are not difficult to design and build. Various designs dating back to the 1930s have been studied, leading to the development of a simple oscilloscope that electronics hobbyists can construct using readily available parts today. The first...
Oscilloscope
For this project, digital signals can be communicated with computers, while analog signals cannot. RS232 refers to the serial port located at the back of the computer, which has multiple ports for connecting devices. The RS232 port has 9 pins....
Dual-trace, triggered oscilloscope
This site contains public-domain schematics for a dual-trace, triggered oscilloscope, and some theory. Click on the topic in the table below to see the schematic for that block. I designed and built this oscilloscope in 1986 using the chassis of...
Digital Storage Oscilloscope Adapter
A follow up Mk2 version described by EA's Jim Rowe in the May/June/July 94 issues of EA improved on the original with calibrated time and vertical scales, and extra triggering features. This design proved even more popular than the first,...
DC-10Mhz Amplifier for Oscilloscope
The DC-10 MHz amplifier shown below is identical for both scope channels. The input FET should be mounted directly on the adjustable attenuator switch for best frequency response. The vertical position pots, R27 and R51, change the dc level of...
Spectrum monitor with memory function circuit
The structure and working principle of this circuit are fundamentally similar to the previous circuit, with some variations in the components used. The circuit is divided into seven bands, with center frequencies selected at 60 Hz, 150 Hz, 400 Hz,...