Any body tested this amp in the application of rugged use PA?
How was the sonics the treble mid and bass ???
How was the sonics the treble mid and bass ???
Last edited:
NE555 protection circuit is working only if i remove 1uf capacitor other wise its continuously switching.......and not stopping until i remove capacitor what could be the reason??
it is switching on/off/ on/off/ or it is just switched off? is it connected to any device or...?
No reply
Finally I have removed 1uF capacitor
what is the maximum voltage that i can give to this NE555 protection
Finally I have removed 1uF capacitor
what is the maximum voltage that i can give to this NE555 protection
Do you connect 10k NTC for thermal protect or 10k resistor instead NTC, 1uF capacitor is for turn on delay do not remove but use 4,7uF to increase time to 5 sec.
Yes i have used 10k NTC when i insert 1uF capacitor the relay is switching on/off/on/off......when i remove its stopping and working fine with DC protect and thermal protect except turn on delay
hi comasus,
can u tell me how u check dc protect and thermal protect working or not, i already checked. but how u did?
what is the relay delay time when on and off.
can u post some images top and bottom pcb
can u tell me how u check dc protect and thermal protect working or not, i already checked. but how u did?
what is the relay delay time when on and off.
can u post some images top and bottom pcb
I have checked it by giving 2vdc by DMM
and used solder for ntc
turn on delay is not working
i have inserted in the speaker box with the amplifier so for the images i have to remove the cover again
expect turn on delay remaining is perfect so i have kept it inside confidently
how u make the pcb? toner transfer method or silkscreen. which layout u followed.
u said turn on delay is not working. then why u put inside the speaker box, can u share some images. top and bottom pcb.
u said turn on delay is not working. then why u put inside the speaker box, can u share some images. top and bottom pcb.
Last edited:
Toner transfer
Followed attached image
I posted my problem but no help and compromised having dc protect
I put inside the speaker as the amplifier was fitted in it
Attachments
hello,i have an problem.i use microcontroller to switch mosfet(IRF840) in boost converter but when i connect the microcontroller its output decreasing thats why it cannot switch this mosfet.so how can i remove this loading problem,plz
hello,i have an problem that to switch mosfet(IRF840) in boost converter by microcontroller .when i connect the microcontroller to mosfet thats the output of the microcontroller out put goes to 5v to 2.5 v(apporiximately) due to loading effect.how can i remove this loading problem.plz anyone