|
|
|
|
|
|
|
|
|
|
|
|
|
| |
DC Motor Control |
| |
This is a circuit for controlling the speed of small DC motors... |
|
|
|
|
|
|
|
| Infrared Remote Control |
|
| This IR remote control circuit Transmitter use IC Op-amp 741 is pluse generator for Triggered SCR which is connected with Infrared LED. |
|
|
|
| |
|
|
| Telephone Amplifier |
|
| The circuit is built for telephone signal amplifier and can be control outside device by Relay . |
|
|
|
|
|
|
|
|
|
| Pulse-width modulation : PWM |
| The Pulse-width modulation (PWM) circuit in figure1 it works by making a square wave with a variable on-to-off ratio. |
|
|
|
|
|
|
|
| Rain Alarm |
| This circuit gives out an alarm when its sensor is wetted by water.A 555 astable multivibrator is used here which gives a tone of about 1kHz. |
|
|
|
|
|
|
|
