Active Filters with power supply Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12191
Indian Lab Suppliers supplies the Active Filters with power supply (Product ID: 12191) as part of its electronics engineering lab equipment range. It is a training board with second-order Butterworth active low-pass, high-pass, band-pass and notch filters built on op-amps.
Quick Answer
Four op-amp ICs run from an IC-regulated ±12 V DC, 50 mA supply, and each filter has unity gain in its pass band. The low-pass cuts off at 1 kHz, the high-pass at 100 Hz, the band-pass passes 100 Hz to 1 kHz, and the notch is centred on 1 kHz with a 100 Hz notch width. Low output impedances (18–30 Ω) and input impedances of several kΩ are stated for each section. A second-order section ideally falls at 40 dB/decade well beyond cut-off; please confirm the roll-off figures at quotation.
Key Specifications
| Parameter | Detail |
|---|---|
| Low-pass | Cut-off 1 kHz; Zin 3.5 kΩ, Zout 18 Ω at 1 kHz |
| High-pass | Cut-off 100 Hz; Zin 12 kΩ, Zout 30 Ω at 100 Hz |
| Band-pass | 100 Hz to 1 kHz; Zin 24 kΩ at 100 Hz, 3.5 kΩ at 1 kHz; Zout 30 Ω / 27 Ω |
| Notch | 1 kHz, width 100 Hz; Zin 15 kΩ, Zout 25 Ω |
| Design | Second-order Butterworth, unity pass-band gain |
| ICs | Four op-amps |
| Built-in supply | ±12 V DC, 50 mA, IC regulated |
| Mains input | 230 V ±10%, 50 Hz AC, with mains switch and pilot lamp |
| Connections | 4 mm terminals; stackable spring-loaded patch cords, 0.5 m |
Where This Is Used
Compare with the L-C circuits on the Passive Filters (Constant-K, Low, High and Band M-derived low & high) (Product ID: 12146); op-amp basics are on the Study of Operational Amplifier (UA 741) with power supply (Product ID: 12185). Mains powered; switch off before rewiring. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
Which filter types are included?
Low-pass, high-pass, band-pass and notch.
What is the notch frequency?
1 kHz, with a 100 Hz notch width.
What is the pass-band gain?
Unity.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Electricity and Magnetism
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