|
Description:
This circuit features automatic Exit/Entry delays, timed Bell Cut-off and System Reset. It has provision for normally open and normally closed switches and will accommodate the usual input devices such as Foil Tape, Pressure Mats, Magnetic Reed Contacts, Passive Infrared Detectors and Inertia (Shock) Sensors.
|
|
Description:
With this circuit we can create a altered sound of siren. The oscillator IC1a-b is constituted by two gates NAND, oscillating in very low frequency. This oscillation drive the IC2, that is a electronic switch, which opens and closes in the rythm of oscillation. When closes the switch then the voltage of supply charge the capacitor C3 through the resistance R2. When switch IC2 opens, the C3 discharge through the R3...
|
|
Description:
It came to me in a flash. A simple way to see if a fuse has blown without removing it from its holder.
Its not often you can design a circuit using just two components, but with just one resistor and an
LED this circuit provides visual indication of when a fuse has blown...
|
|
Description:
This circuit is intended for children fun, and can be installed on bicycles, battery powered cars and motorcycles, but also on models and various games and toys. With SW1 positioned as shown in the circuit diagram, the typical dual-tone sound of Police or Fire-brigade cars is generated, by the oscillation of IC1A and IC1B gates...
|
|
<< Start < Prev 11 12 13 14 Next > End >>
|
| Results 49 - 52 of 56 |
