I have applied a design from Simple infrared data communications for IR communication however when I put the 74hct132 to circuit, output voltage of 7805 drop to about 4.3 volts. I use 4 ir led and use 4 output of 74hct132. however at that voltage tsop 1176 can not work properly (I use 76khz instead of 38khz).
shortly, i get 76khz from 16f628 ccp1, take input from software tx's (4 led 4 different data), these lines go to inputs of hct132 and at output i drive ir led by using pnp transistors bc556.
How can i fix that problem?
thank you very much.
shortly, i get 76khz from 16f628 ccp1, take input from software tx's (4 led 4 different data), these lines go to inputs of hct132 and at output i drive ir led by using pnp transistors bc556.
How can i fix that problem?
thank you very much.
