Manuel Caldeira
PORTUGAL • + Follow
Edit Project
Description
75 to 300 Ohm L-Pad with switched attenuator.
Allows for switched switchable attenuation steps and impedance matching of the signal generator signal.
Oct 06,2021
3,330 views
75 to 300 Ohm L-Pad with switched attenuator.
Allows for switched switchable attenuation steps and impedance matching of the signal generator signal.
3330
8
3
9.75 (3)
Published: Oct 06,2021
Standard PCB
Purchase
Donation Received ($)
PCBWay Donate 10% cost To Author
Copy this HTML into your page to embed a link to order this shared project
Copy
Under the
Attribution-ShareAlike (CC BY-SA)
License.
- Comments(3)
- Likes(8)
Upload photo
You can only upload 5 files in total. Each file cannot exceed 2MB. Supports JPG, JPEG, GIF, PNG, BMP
0 / 10000
It looks like you have not written anything. Please add a comment and try again.
You can upload up to 5 images!
Image size should not exceed 2MB!
File format not supported!
View More
-
Engineer
Nov 13,2025
-
Alberto Bolzonella
Oct 21,2025
-
Benoysimon
Feb 17,2025
-
Engineer
Oct 01,2024
-
Engineer
Sep 25,2024
-
Engineer
Jun 17,2024
-
Engineer
May 30,2022
-
Engineer
Feb 15,2022
View More
VOTING
3 votes
- 3 USER VOTES
9.75
- YOUR VOTE 0.00 0.00
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Design
1/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Usability
2/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Creativity
3/4
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
Content
4/4
-
10design
-
9usability
-
10creativity
-
10content
9.75
-
9design
-
9usability
-
10creativity
-
10content
9.50
-
10design
-
10usability
-
10creativity
-
10content
10.00
More by Manuel Caldeira
-
Low Power AM Transmitter with Bluetooth
Low Power AM Transmitter with BluetoothThis DIY AM transmitter lets you wirelessly broadcast music o...
-
SMD version - Bluetooth Module Supply and Booster board for tube radio
The SMD version of my Tube Radio Bluetooth Module boardsThe definitive Bluetooth Module PCB to seaml...
-
Capacitor Discharger
Working with tube gear and high-end audio equipment presents certain challenges, the most significan...
-
Bridge Rectifier with Mosfet Voltage Dropper 2024-09-02
This PCB is the perfect solution to replace the selenium rectifier in vintage tube radios with moder...
-
Add SSB to Any Radio — Wireless BFO Project
This project is a wireless Beat Frequency Oscillator (BFO) designed to let almost any shortwave radi...
-
Simple AC to DC Rectifier + Filter + Regulator Board
This is a tiny AC to DC regulator module I designed for quick and reliable power conversion. The boa...
-
Varicap Fine-Tuning Board for Shortwave Tube Radios
This PCB is a varicap diode fine-tuning module designed to add smooth, precise control to the shortw...
-
EO&N Under-Shelf Module for Electronics Test Gear
EO&N Under-Shelf Module for Electronics Test GearThis is a standardized 3D-printable enclosure f...
-
Audio Dummy Load Switcher Using Relays
An audio switcher that switches between a speaker output, or a resistive dummy load - 8Ω or 4Ω - usi...
-
MW band VFO controlled by Ardiuno and AD9833
A digitally controlled VFO to use in a Low Power AM transmitter for the Broadcast band, based on an ...
-
B-Beep Diode Beep Tester 2025-03-07
B-Beep Smart Diode TesterThis practical device can test all types of PN junctions, like Silicon diod...
-
EO&N Audio Signal Generator
EO&N Audio Signal GeneratorA really simple battery-operated audio signal generator to provide fl...
-
Digital Switched Attenuator - Control Board
I designed and built a 50Ω digitally controlled stepped attenuator for RF work, offering 3dB steps u...
-
Digital Switched Attenuator - Relay Board
I designed and built a 50Ω digitally controlled stepped attenuator for RF work, offering 3dB steps u...
-
Digital Switched Attenuator - Relay Board
I designed and built a 50Ω digitally controlled stepped attenuator for RF work, offering 3dB steps u...
-
Decade Resistor Box using inexpensive 11-position rotary switches, and 3D printed enclosure.
Decade Resistor Box built with cost-effective 11-position rotary switches, making it an affordable y...
-
Magic Eye Switch for Bluetooth Boards
Magic Eye Switch for Bluetooth BoardsThis is an add-on to allow the Bluetooth Boards that I designed...
-
Tube Radio Bluetooth Module boards
The definitive Bluetooth Module PCB to seamlessly add BT to a tube radio, with no buzzing noise, and...
You may also like
-
-
AEL-2011 Power Supply Module
397 0 2 -
AEL-2011 50W Power Amplifier
367 0 2 -
-
-
Custom Mechanical Keyboard
607 0 0 -
Tester for Touch Screen Digitizer without using microcontroller
266 2 2 -
Audio reactive glow LED wristband/bracelet with NFC / RFID-Tags
258 0 1 -
-
-







