Cheshtap Power Amp

[wattaniya]

Hi cheshtap,
can u tell me what are the diodes i pointed in the pcb image.
thank u.

 

[wattaniya]

i found the diode number -HER204,
hard to buy this diode.
any substitute for this diode?

 

[khalsa]

sir 1n4007

 

[andrewlebon]

DIODE

FR 207 FR307

 

[wattaniya]

sir 1n4007

khalsa i dont think so in4007 is substitute for her204.
her204 50ns 2a, in4007 1a and lot of difference.

 

[wattaniya]

FR 207 FR307

thanks andrew.

 

[east electronics]

is this amplifier actually working ????

----can anyone expect 25amps per rail to pass from such a thin trace ( from fuse holder to the input pin ? )

---- 16 outputs will work without base resistors ?? if so this something i see for the first time ....

---- then again when you built such a big amp distributing the outputs full pcb size from side to side ...to gain space between transistors is the best way to go so heatsink may be able to dissipate heat better and faster ....


there is a few other things ....

 

[HighTec]

----can anyone expect 25amps per rail to pass from such a thin trace ( from fuse holder to the input pin ? )

+1

Copper braid or copper straps jumpers should be used. The picture shows how Ecler solved this problem in their powerful amps like PAM4100 and PAM6100. The pcb shown is actually from PAM360 but the same solution is used in PAM4100/6100 models. 😉

 

[wattaniya]

finally i found her204 diode.
the price is us $.1 for each.

 

[mj777]

chestap amp

hi nazirdigi, how is your chestap amp, did you made it?

regards,
Marjohn

 

[wattaniya]

hi nazirdigi, how is your chestap amp, did you made it?

regards,
Marjohn

not yet.

 

[wattaniya]

chestap amp pcb is ready.

 

[wattaniya]

now top silk screen is finished.
i m buisy these days, thats why this work is getting long.

 

[wattaniya]

hard working on cheshtap amp.

 

[wattaniya]

hi irvenjay and andrewlebon,
can u give me the cap voltages i pointed in the image.
thanks.

 

[wattaniya]

HI,cheshtap,
can u tell me what are the exact voltages of this capacitor?

 

[Gitsa]

Hi,this amp is the same scheme.

 

[wattaniya]

Hi,this amp is the same scheme.

what is the power of this amp?

 

[Gitsa]

what is the power of this amp?

Ausgangsleistung (8 Ohm): 2 x 400 Watt RMS
Ausgangsleistung (4 Ohm): 2 x 700 Watt RMS
Ausgangsleistung (2 Ohm): 2 x 1000 Watt RMS
Ausgangsleistung (8 Ohm gebrückt): 1250 Watt RMS
Ausgangsleistung (4 Ohm gebrückt): 1700 Watt RMS
Ausgangs Schaltungstype: Class AB
Eingangs Impedanz: 10 kOhm
Frequenzgang: 15 Hz - 25 kHz
THD: < 0,03%
IMD 60 Hz & 7 KHz, 4:1: < 0,038
Anstiegszeit / -geschwindigkeit: 40 V / µsec
Signalrauschabstand: > 102 dB
Dämpfungsfaktor: > 400
Kühlung: Aktiv, Temperaturgeregelt
Schutzschaltungen: DC-Ausgang Schutz, Langzeit Überhitzungskontrolle, Einschaltverzögerung, Soft-Power-Start, intelligenter Überlastungsschutz, Clip Limiter
2 x XLR Eingang + 2 x XLR Thru Ausgang
2 x Speaker (SPK) Ausgänge
2 Kanal Lautsprecher- Schraubklemmen
Parallel / Stereo / Bridge - Mode
Normal / Compress - Mode (Clip Limiter)
Ground / Lift- Mode
Sensitivity-Schalter: 1,44V / 1,0V / 0,7V
elektrischer Anschluss: 230 Volt
Größe (LxHxT): 482 x 383 x 88,8 mm
Gewicht (Netto): 16,5 kg
Gewicht (Brutto): 18 kg

 

[wattaniya]

thanks for the reply gitsa.