900W H-class PA Amp with Limiter

[gooseneck]

To sir Engel... any model sir of CRT monitor...?tnx...benny

 

[engel dela pena]

many chinese brands use bav

 

[gooseneck]

Sir Engel...

can you post sir the schematic diagram of CHESTAP amp driver...?


tnx...benny

 

[andrewlebon]

bav21

try element 14 they usually stock it

 

[gooseneck]

sir andrew...what you mean by element 14...is this an electronic store...in the philippines...or a replacement diode...?


tnx...benny

 

[engel dela pena]

on line store

 

[wattaniya]

pls share.

hi khalsa
greetings pcb is 32.5 cm length breadth 8.4 cm
warm regards
andrew lebon

hi andrew lebon.
there is a chematic print out paper on the image.is that cheshtap chematic?
can u share it.
thanks

 

[andrewlebon]

no schematic

hi nazirdigi
greetings theres no schematic why cant you build the amp without
schematic its well documented
warm regards
andrew lebon

 

[wattaniya]

hi nazirdigi
greetings theres no schematic why cant you build the amp without
schematic its well documented
warm regards
andrew lebon

hi andrew lebon.
can u share the full pcb layout of that amp u made.
thanks.

 

[andrewlebon]

pcb

hi nazirdigi
greetings PAGE 150 post 1494 only cut nc no of relay hope this helps you
warm regards
andrew lebon

 

[wattaniya]

hi nazirdigi
greetings PAGE 150 post 1494 only cut nc no of relay hope this helps you
warm regards
andrew lebon

hi andrew lebon.
what purpose only cut nc?
thanks.

 

[andrewlebon]

nc no

hi nazirdigi
greeting nc normally closed no normally open are both short on pcb
so pcb track has to be cut otherwise in case of fault relay wont cut after making pcb populate dc protector parts after applying 12 volts dc see there is on delay apply 12 volt dc on speaker output see relay energises and red led comes on if this happens your dc protector is working then put all parts so when testing if you have made any mistake in assembling amp it will cut off saving your speakers use 100 watt bulb in SERIES while powering on
warm regards
andrew lebon

 

[wattaniya]

hi nazirdigi
greeting nc normally closed no normally open are both short on pcb
so pcb track has to be cut otherwise in case of fault relay wont cut after making pcb populate dc protector parts after applying 12 volts dc see there is on delay apply 12 volt dc on speaker output see relay energises and red led comes on if this happens your dc protector is working then put all parts so when testing if you have made any mistake in assembling amp it will cut off saving your speakers use 100 watt bulb in SERIES while powering on
warm regards
andrew lebon

thanks andrew lebon for ur explanation.
cheshtap said that two kind of relay can use.so which is good relay?
what is the ampere of the relay and voltage?
thanks.

 

[andrewlebon]

relay

relay coil voltage is 12 VOLT DC
CONTACT RATINGS 30 AMPERES
before you buy relay see that the relay pins COINCIDE WITH pcb holes
warm regards
andrew lebon

 

[wattaniya]

relay coil voltage is 12 VOLT DC
CONTACT RATINGS 30 AMPERES
before you buy relay see that the relay pins COINCIDE WITH pcb holes
warm regards
andrew lebon

thanks andrew lebon.

 

[sandeep kayarkar]

hello sir, good morning,

can u pls tell me about transformer for the H900,

 

[irvynejay]

hello sir, good morning,

can u pls tell me about transformer for the H900,

80 40 0 40 80 vac 20 to 30 ampere

 

[sandeep kayarkar]

ohhhh thank u sir,
n can u pls tell me the PRISE? sorry for this but.....................

 

[andrewlebon]

with mjls

hi chestap
greetings work in progress tell you result today
warm regards
andrew lebon

 

[DILIP KUMAR]

9oow h-calss

mr. andrewlabon nice work dilip kumar