Radio Circuits

AM Receiver
ZN414 Portable Receiver
2 Transistor FM Voice Transmitter
FM Transmitter
4 Transistor Transmitter
FM Transmitter with Opamp
Band 2 Preamplifier
Superhet AM Broadcast Receiver
AM Broadcast Loop Antenna
Micro Power AM Broadcast Transmitter
FM Beacon Transmitter (88-108 MHz)
Medium-Power FM Transmitter

Electronics: Timing Circuits

Periodic Timer
Asymmetric Timer
24 Hour Timer
555 Pulse Generator
Repeating Interval Timer
Repeating Timer No.2
LM555 Timers - Circuits and Calculators
Long delay Timer
Bike Light Flasher
Headlight Flasher

Medical Electronics / Biomedical Circuits

DS1621 pc thermometer
Electronic Stethoscope
The ESP SIM (Sound Impairment Monitor)

Power Supply Circuits

12VDC To 120VAC Inverter
Automatic Load Sensing Power Switch
Car Battery Charger
Dual Polarity Power Supply
Fixed Voltage Power Supply
High Current Power Supply
High Voltage High Current Power Supply
Power Supply
Machine power loss beepter (PDF)
DC/AC inverter
Variable Dual Lab Power Supply
12v "high" or "low" battery monitor
Electric power controller
Live-line Detector
AC Current Monitor

Electrical Motor Speed Control

These Are Projects for Electronics,Applied Electronics And Electrical Engineering Students

AC Motor Speed Controller
Pulse Width Modulation DC Motor Control
Simple Servo Controller
Simple Two Speed Contactor DC Motor Controller
Stepper Motor Controller
DC motor speed controller
Stepper Motor controller (2)