Free Running Multivibrator (Astable) with power supply Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12139
Indian Lab Suppliers supplies the Free Running Multivibrator (Astable) with power supply (Product ID: 12139) as part of its electronics engineering lab equipment range. It is a training board for studying a transistor free-running (astable) multivibrator, a simple square-wave generator.
Quick Answer
Two NPN transistors and two potentiometers are fitted with an IC-regulated 9 V DC, 50 mA supply. Students study the circuit operation, observe the waveforms at the collectors and bases, and then build an improved free-running multivibrator and compare its output shape. Each half-period is set by an R-C time constant, roughly 0.69RC, so the potentiometers change the frequency and mark-space ratio. Weight and dimensions are not listed; please confirm at quotation.
Key Specifications
| Parameter | Detail |
|---|---|
| Circuit | Free-running (astable) multivibrator, plus improved version |
| Transistors | Two NPN |
| Controls | Two potentiometers |
| Built-in supply | 9 V DC, 50 mA, IC regulated |
| Mains input | 230 V ±10%, 50 Hz AC, with mains switch, fuse and pilot lamp |
| Connections | 4 mm terminals; stackable spring-loaded patch cords, 0.5 m |
| Also required | 20 MHz CRO |
Where This Is Used
Part of a pulse-circuits set with the Bi-Stable Multivibrator with power supply (Product ID: 12140) and the Mono-Stable Multivibrator with power supply (Product ID: 12141). The board runs from 230 V mains; switch off before rewiring. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
What output does it give?
A square wave, without any trigger input.
What changes the frequency?
The R-C time constants, adjusted with the two potentiometers.
What is needed to view waveforms?
A 20 MHz oscilloscope.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Electricity and Magnetism
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