Capacitive Sensor(Touch switch relay) with BC337



Capacitive Sensor(Touch switch relay) with BC337

Special design for shop-windows animation
Useful for many types of touch controls

Parts:

R1,R2_____1M 1/4W Resistors
R3,R4____47K 1/4W Resistors

C1_______10µF 25V Electrolytic Capacitor
C2______470pF 630V Ceramic or Polyester Capacitor

D1-D3____1N4002 100V 1A Diodes

Q1-Q3_____BC337 45V 800mA NPN Transistors

RL1_______Relay with SPDT 2A @ 220V switch
Coil Voltage 12V. Coil resistance 200-300 Ohm

J1________Two ways output socket

Sensor____Aluminium or copper thin sheet with the dimensions of a post-card,
glued at the rear of the same (about 15×10.5 cm.)

Thin screened cable

Related Links
More circuit about touch relay switch
Single Transistor Relay Toggle Circuit
Relay Toggle Circuit Using a 556 Timer
CMOS Toggle Flip Flop Using Push Button
Relay Toggle Circuit Using a 555 Timer
CMOS Toggle Flip Flop Using Laser Pointer
Touch Switch By IC 4001 & 4020

Source: http://www.redcircuits.com//Page22.htm






Power Supply   Switching Power Supply   DC to DC Converter   Inverter
Battery charger   Led flasher   Motor speed controller   LM317   IC 741
RF radiofrequency   Electronic control   Digital Circuit   Alarm home system
DC to DC converter step up voltage   Mini project   Temperature control
FM receiver   Dual power supply   Fluorescent lamp   Pic microcontroller
Led display   RF amplifier   FM transmitter   LM324   LM723   TL494
2N3055   LM338   SG3525   Li-ion battery charger   Pulse generator


Easy Find circuit in My web - Greater than 2,000 circuit
Google

This entry was posted on Friday, September 14th, 2007 at 9:07 pm and is filed under Electronic Control. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Electronics Kit for you