ECE PROJECTS CIRCUITS N DESIGNS DOWNLOAD VIEW1
Everything you Wanted to know About Wideband Low frequency Transformers
External Isolation Transformer Box: designed for Mackie and other Mixers Eliminates RFI Problems (Electronic Schematic / circuit added).
Grounding & Shielding: describes basic audio transformer uses like balanced in/out and signal splitters (Electronic Schematic / circuit added).
High CMRR Balanced Interface: Uses for Crystal18 or20 Bit A/D Converters. This is a PDF file (Electronic Schematic / circuit added).
High Output Line Driver for Single Ended Power Supply: PDF file (Electronic Schematic / circuit added).
IC Mic Preamp uses Jensen Twin Servo topology
Isolator transformer for audio lines
A magnetic loop antenna for 160 to 15m
A magnetic loop antenna for 40 to 17m local and DX contacts from tight spaces
A magnetic loop antenna for 80 and 40m an antenna for anywhere, even indoors
A QRP DX antenna pier + squid pole + wire = QRP DX
Active Antenna for AM-FM-SW WITH CIRCUIT.
AM/FM/SW Active Antenna with Circuit.
An end-fed antenna
Antennas Designs.
Magnetic loop antenna for 160 to 15m
Magnetic loop antenna for 40 to 17m local and DX contacts from tight spaces
OA-26: OA-26 Designing Active High Speed Filters
MW Active Antenna
Q-Multiplying Loop Antenna
QRP Antenna Tuner
QRP DX antenna pier
TV/Radio Antenna Cable galvanic isolator
The ATL-3 Loop Antenna
A Basic Introduction to Filters: Active, Passive and Switched-Capacitor
A Simple Method of Designing Multiple Order All Pole Bandpass Filters by Cascading 2nd Order Sections
Active 2nd Order Filters and Active Bandpass Filters
Akerberg-Mossberg AM Second Order Bandpass inverting
Bandpass Filter Features Adjustable Q and Constant Maximum Gain
Bandpass filters
Band-pass Network
Basic Introduction to Filters
Berka-Herpy BH Second Order Bandpass non-inverting
Constant-impedance IF bandpass filters improve circuit performance
240V AC TO 5VDC POWER SUPPLY
CAPS PROVIDE VOLTAGE BOOST TO SERIES REGULATOR
Classic Plus and Minus DC Power Supply
Classic Linear 5v Supply Using 6.3vac Transformer
LOW POWER 12,000 VOLT POWER SUPPLY
MINIATURE ISOLATED AC/DC POWER SUPPLY
Non-isolated Off-line AC to DC Power Supply
AC Line Powered LED Strings
CHARGE COUPLED BI-DIRECTIONAL POWER MOSFET RELAY
SOLID STATE RELAY REQUIRES ONLY 50uA DRIVE CURRENT
ISOLATED AC CURRENT MONITOR
1MV Offset Clock-Tunable Monolithic 5-Pole Lowpass Filter
Centronics Port DA Converters and Lowpass Filter
Applications for a DC Accurate Lowpass Switched-Capacitor Filter
Chebyshe Volt/Butterworth Filters
Chopper Amplifiers Complement a DC Accurate Low-Pass Filter
Low-Pass Filter RFI Filter
Lowpass, 30-kHz Bessel filter offers high performance for audio applications
Low-Sensitivity, Lowpass Filter Design
LTC1560-1: Tiny 1MHz Lowpass Filter uses No Inductors
OA-27: OA-27 Low-Sensitivity, Lowpass Filter Design
Replace Discrete Lowpass Filters with the LTC1563 Zero Design Effort Two Item Bom and No Surprises
SSB AF Filter
Unique Applications for the LTC1062 Lowpass Filter
Active Filter has Wideband Tuning Range
Adjustable Filter Provides Lowpass Response
Single Resistor Tunes Lowpass Filter
Lowpass Filter Discriminates Step Input from Noise
Ultrasonic Switch
Ultrasonic Transducer Oscillator Circuit
Highpass Filters Use Modified Equalelement Design
Lowpass Filter has Improved Step Response
Precision Level Shifter has Excellent CMRR
Brick-wall lowpass audio filter needs no tuning
LX1741/1742 Formula Calculator for AN22
Model Fixed Point DSP Arithmetic in C
MW Active Antenna
OA-26: OA-26 Designing Active High Speed Filters
Resistor Calculator
RISC µP Implements Fast FIR Filter
Subwoofer Equalizer
Micropower AM Band radio station
Pi Filter has Sharp Notch
Pi Section Coupler
RF Amplifier for Ferrite Bar Antennas
Unamplified Four Foot Box Loop
ZN414 AM Receiver
AM BCB Radio Receiver
AM Receiver for Aircraft Communications
AM Receiver
AM-Receiver for Aircraft Communication (118.250MHz)
Designing an AM Receiver For Low Power Wireless Systems Using the NEC UPC2768GR IC
One-transistor Regenerative AM Receiver
Powerful AM Transmitter
Basic RF Transmitter for PIR Sensors
Battery Low Voltage Beeper
Beeper
Big Ben Sound
ZN414 Portable AM Receiver
AM DSB Transmitter for Hams
AM Transmitter (circuitdb)
AM Transmitter (zen22142)
AM Transmitter (zen22142)
Micro Power AM Broadcast Transmitter
A 4 to 20 mA loop needs no external power source
AC Current Monitor
Active Feedback IC Serves as Current Sensing Instrumentation Amplifier
AN35 High-Side Current Sensing
Current Feedback Amplifiers
Development of an Extensive SPICE Macromodel for 'Current-Feedback' Amplifiers
Analog input circuit Serves any microController
Bias Voltage and Current Sense Circuits for Avalanche Photodiodes
1 In/4 Out Audiodistribution Amplifier
1.5 Volt Amplified Ear
10 Watt Audio Amplifier
100 Watt Amp Circuit
100 Watt Guitar Amplifier Mk2
100 Watt Guitar Amplifier
100 Watt RMS Amplifier
15 Watt Amplifier
18 Watt Audio Amplifier
-/+ -0.1V Differential Amplifier Circuit using Zero Threshold EPAD MOSFETs
A Single Amplifier Precision High Voltage Instrument Amp
AC Coupling Instrumentation Amplifier Improves Rejection Range Of Differential Dc Input Voltage
Amplifier And Current Source Emulate Instrumentation Amplifier
Brick-wall lowpass audio filter needs no tuning
Lowpass Filter uses Only Two Values
Low Pass Active Filter
78 RPM and RIAA Phono Equaliser
Adjustable 60Hz Filter
Adjustable Audio Notch Filter
Build an Adjustable High Frequency Notch Filter
Closing the Loop Deepens Notches
CW Filters
Easy Parametric and Graphic Eq's Plus Peaks and Notches
High Q Notch Filter
High-Q 60-Hertz Notch Filter
LB-5: High Q Notch Filter
Notch Filter is DC Accurate
Notch Filter is Insensitive to Component Tolerances
Notch Filter uses Only Lowpass Filters
Notebook Power Supply has Two Outputs
Reverse RIAA Equalise
Simple Easy Parametric and Graphic Eq's Plus Peaks and Notches
Switched-capacitor IC forms notch filter
Variable notch filter with both high and low pass filters
1 Wire Barometer
12-Bit 8-Channel Data Acquisition System Interfaces to IBM PC Serial Port
16-Channel 24-Bit Delta Sigma ADC Provides Small Flexible and Accurate Solutions for Data Acquisition
Linkwitz Transform Circuit
Low-Sensitivity, Bandpass Filter Design with Tuning Method
Micro-power Band-pass Network
Multiple Feedback Bandpass Filter
Narrow Band Audio Bandpass Filter
OA-28: OA-28 Low-Sensitivity, Bandpass Filter Design with Tuning Method
Self Tune Filter
Single Op-Amp Bandpass Filter
A Collection of Differential to Single-Ended Signal Conditioning Circuits for Use with the LTC2400 a 24-Bit No Latency Δσadc in an SO-8
A Two Wire Isolated and Powered 10-Bit Data Acquisition System
Addressable ADC
ADC to PC interface Transfers data in nibbles
CHANNEL LINK Moving and Shaping Information in Point-To-Point Applications
Integrated Circuits for Digital Data Transmission
Data Acquisition using Ins8048
High Input Impedance DC Summing Amplifier
High Input Impedance Precision DC Summing Amplifier
27MHz toy car receiver
500mW HF Linear Amplifier
500w HF Linear Amplifier
Composite Amp Provides High Gain and Bandwidth
Singlesideband Demodulator Covers the HF Band
Wideband Opamp Capable of Micropower Operation
TV/Radio Antenna Cable galvanic isolator
Air Flow Detector
Airflow Monitor Protects Components
AM2 circuit
Am-Receiver for Aircraft Communication (118.250MHz)
Designing an AM Receiver For Low Power Wireless Systems Using the NEC UPC2768GR IC
General Purpose RF Amplifier
How to Build a 300MHz AM RF Remote Control System
Everything you Wanted to know About Wideband Low frequency Transformers
External Isolation Transformer Box: designed for Mackie and other Mixers Eliminates RFI Problems (Electronic Schematic / circuit added).
Grounding & Shielding: describes basic audio transformer uses like balanced in/out and signal splitters (Electronic Schematic / circuit added).
High CMRR Balanced Interface: Uses for Crystal18 or20 Bit A/D Converters. This is a PDF file (Electronic Schematic / circuit added).
High Output Line Driver for Single Ended Power Supply: PDF file (Electronic Schematic / circuit added).
IC Mic Preamp uses Jensen Twin Servo topology
Isolator transformer for audio lines
A magnetic loop antenna for 160 to 15m
A magnetic loop antenna for 40 to 17m local and DX contacts from tight spaces
A magnetic loop antenna for 80 and 40m an antenna for anywhere, even indoors
A QRP DX antenna pier + squid pole + wire = QRP DX
Active Antenna for AM-FM-SW WITH CIRCUIT.
AM/FM/SW Active Antenna with Circuit.
An end-fed antenna
Antennas Designs.
Magnetic loop antenna for 160 to 15m
Magnetic loop antenna for 40 to 17m local and DX contacts from tight spaces
OA-26: OA-26 Designing Active High Speed Filters
MW Active Antenna
Q-Multiplying Loop Antenna
QRP Antenna Tuner
QRP DX antenna pier
TV/Radio Antenna Cable galvanic isolator
The ATL-3 Loop Antenna
A Basic Introduction to Filters: Active, Passive and Switched-Capacitor
A Simple Method of Designing Multiple Order All Pole Bandpass Filters by Cascading 2nd Order Sections
Active 2nd Order Filters and Active Bandpass Filters
Akerberg-Mossberg AM Second Order Bandpass inverting
Bandpass Filter Features Adjustable Q and Constant Maximum Gain
Bandpass filters
Band-pass Network
Basic Introduction to Filters
Berka-Herpy BH Second Order Bandpass non-inverting
Constant-impedance IF bandpass filters improve circuit performance
240V AC TO 5VDC POWER SUPPLY
CAPS PROVIDE VOLTAGE BOOST TO SERIES REGULATOR
Classic Plus and Minus DC Power Supply
Classic Linear 5v Supply Using 6.3vac Transformer
LOW POWER 12,000 VOLT POWER SUPPLY
MINIATURE ISOLATED AC/DC POWER SUPPLY
Non-isolated Off-line AC to DC Power Supply
AC Line Powered LED Strings
CHARGE COUPLED BI-DIRECTIONAL POWER MOSFET RELAY
SOLID STATE RELAY REQUIRES ONLY 50uA DRIVE CURRENT
ISOLATED AC CURRENT MONITOR
1MV Offset Clock-Tunable Monolithic 5-Pole Lowpass Filter
Centronics Port DA Converters and Lowpass Filter
Applications for a DC Accurate Lowpass Switched-Capacitor Filter
Chebyshe Volt/Butterworth Filters
Chopper Amplifiers Complement a DC Accurate Low-Pass Filter
Low-Pass Filter RFI Filter
Lowpass, 30-kHz Bessel filter offers high performance for audio applications
Low-Sensitivity, Lowpass Filter Design
LTC1560-1: Tiny 1MHz Lowpass Filter uses No Inductors
OA-27: OA-27 Low-Sensitivity, Lowpass Filter Design
Replace Discrete Lowpass Filters with the LTC1563 Zero Design Effort Two Item Bom and No Surprises
SSB AF Filter
Unique Applications for the LTC1062 Lowpass Filter
Active Filter has Wideband Tuning Range
Adjustable Filter Provides Lowpass Response
Single Resistor Tunes Lowpass Filter
Lowpass Filter Discriminates Step Input from Noise
Ultrasonic Switch
Ultrasonic Transducer Oscillator Circuit
Highpass Filters Use Modified Equalelement Design
Lowpass Filter has Improved Step Response
Precision Level Shifter has Excellent CMRR
Brick-wall lowpass audio filter needs no tuning
LX1741/1742 Formula Calculator for AN22
Model Fixed Point DSP Arithmetic in C
MW Active Antenna
OA-26: OA-26 Designing Active High Speed Filters
Resistor Calculator
RISC µP Implements Fast FIR Filter
Subwoofer Equalizer
Micropower AM Band radio station
Pi Filter has Sharp Notch
Pi Section Coupler
RF Amplifier for Ferrite Bar Antennas
Unamplified Four Foot Box Loop
ZN414 AM Receiver
AM BCB Radio Receiver
AM Receiver for Aircraft Communications
AM Receiver
AM-Receiver for Aircraft Communication (118.250MHz)
Designing an AM Receiver For Low Power Wireless Systems Using the NEC UPC2768GR IC
One-transistor Regenerative AM Receiver
Powerful AM Transmitter
Basic RF Transmitter for PIR Sensors
Battery Low Voltage Beeper
Beeper
Big Ben Sound
ZN414 Portable AM Receiver
AM DSB Transmitter for Hams
AM Transmitter (circuitdb)
AM Transmitter (zen22142)
AM Transmitter (zen22142)
Micro Power AM Broadcast Transmitter
A 4 to 20 mA loop needs no external power source
AC Current Monitor
Active Feedback IC Serves as Current Sensing Instrumentation Amplifier
AN35 High-Side Current Sensing
Current Feedback Amplifiers
Development of an Extensive SPICE Macromodel for 'Current-Feedback' Amplifiers
Analog input circuit Serves any microController
Bias Voltage and Current Sense Circuits for Avalanche Photodiodes
1 In/4 Out Audiodistribution Amplifier
1.5 Volt Amplified Ear
10 Watt Audio Amplifier
100 Watt Amp Circuit
100 Watt Guitar Amplifier Mk2
100 Watt Guitar Amplifier
100 Watt RMS Amplifier
15 Watt Amplifier
18 Watt Audio Amplifier
-/+ -0.1V Differential Amplifier Circuit using Zero Threshold EPAD MOSFETs
A Single Amplifier Precision High Voltage Instrument Amp
AC Coupling Instrumentation Amplifier Improves Rejection Range Of Differential Dc Input Voltage
Amplifier And Current Source Emulate Instrumentation Amplifier
Brick-wall lowpass audio filter needs no tuning
Lowpass Filter uses Only Two Values
Low Pass Active Filter
78 RPM and RIAA Phono Equaliser
Adjustable 60Hz Filter
Adjustable Audio Notch Filter
Build an Adjustable High Frequency Notch Filter
Closing the Loop Deepens Notches
CW Filters
Easy Parametric and Graphic Eq's Plus Peaks and Notches
High Q Notch Filter
High-Q 60-Hertz Notch Filter
LB-5: High Q Notch Filter
Notch Filter is DC Accurate
Notch Filter is Insensitive to Component Tolerances
Notch Filter uses Only Lowpass Filters
Notebook Power Supply has Two Outputs
Reverse RIAA Equalise
Simple Easy Parametric and Graphic Eq's Plus Peaks and Notches
Switched-capacitor IC forms notch filter
Variable notch filter with both high and low pass filters
1 Wire Barometer
12-Bit 8-Channel Data Acquisition System Interfaces to IBM PC Serial Port
16-Channel 24-Bit Delta Sigma ADC Provides Small Flexible and Accurate Solutions for Data Acquisition
Linkwitz Transform Circuit
Low-Sensitivity, Bandpass Filter Design with Tuning Method
Micro-power Band-pass Network
Multiple Feedback Bandpass Filter
Narrow Band Audio Bandpass Filter
OA-28: OA-28 Low-Sensitivity, Bandpass Filter Design with Tuning Method
Self Tune Filter
Single Op-Amp Bandpass Filter
A Collection of Differential to Single-Ended Signal Conditioning Circuits for Use with the LTC2400 a 24-Bit No Latency Δσadc in an SO-8
A Two Wire Isolated and Powered 10-Bit Data Acquisition System
Addressable ADC
ADC to PC interface Transfers data in nibbles
CHANNEL LINK Moving and Shaping Information in Point-To-Point Applications
Integrated Circuits for Digital Data Transmission
Data Acquisition using Ins8048
High Input Impedance DC Summing Amplifier
High Input Impedance Precision DC Summing Amplifier
27MHz toy car receiver
500mW HF Linear Amplifier
500w HF Linear Amplifier
Composite Amp Provides High Gain and Bandwidth
Singlesideband Demodulator Covers the HF Band
Wideband Opamp Capable of Micropower Operation
TV/Radio Antenna Cable galvanic isolator
Air Flow Detector
Airflow Monitor Protects Components
AM2 circuit
Am-Receiver for Aircraft Communication (118.250MHz)
Designing an AM Receiver For Low Power Wireless Systems Using the NEC UPC2768GR IC
General Purpose RF Amplifier
How to Build a 300MHz AM RF Remote Control System
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