8 Relay Interface Card

New 8 Relay Interface Card

http://www.onlinetps.com/ViewItem.php?ItemID=193

Ideal for interfacing relay to microcontroller
or computer

* Input high level voltage 2- 5 V

* Hysteresis Inputs to Improve Noise Immunity

* Ideal for ATMEL , AVR , PIC , Phillips Intel Based Microcontroller

* on bolard power Supply Regulator circuit

* +5 Volts and +12 Volts output on board

PCB Chemical Heater is useful to keep worming PCB Etching Chemical - Ferric Chloride. During etching process it speedup etching process
http://onlinetps.com/ViewItem.php?ItemID=208
_________________

Hello,

can any one tell me what is the Circuit inside that board?
Or which are the IC's used in that board?

----------------
Thank You.....

vmax.

relay drivers.. most probably ULN2803

yes uln 2803is there