Logarithmic-sweep-vco


Posted on Dec 14, 2012

This circuit uses the output of the IGL8049 to control the frequency of the IGL3038 waveform generator; the 741 op amp is used to linearize the voltage-frequency response. The input voltage to the 8049 can be, for example, from the horizontal sweep signal of an oscilloscope; the output of the 8038 will then sweep logarithmically across the audio range. By feeding this to the equipment being measured and detecting the output, a standard frequency response can be obtained.


Logarithmic-sweep-vco
Click here to download the full size of the above Circuit.

If the output is fed through an IGL8048 before being displayed, a standard bode plot results.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Automatic contrast meter
40Mhz-universal-counter
Battery-Saving Disconnect Switch
High Input Voltage regulator using LM340
ir remote control home appliance
tonefrequency detector circuit
automatic windshield washer
UHF Audio Video Sender Circuit
Low cost Mic Mixer
Guitar To MIDI Using The LogoChip V2
TRF1115 RF Down-Converter
MicroFlash Schematic
AM radio rf amplifier
How To Build A Simple Current Limiting Bench Power Supply
Flash music gyro schematic
Practical gated burglar alarm circuit diagram



Top