hi apexaudio
greetings just want to confirm a few things
1 R 100 is .47 ohms R52 4.7 ohms should be of same value what is correct value
2 how to identify 1 WATT RESISTANCES in vertex schematic i am thinking
longer resistances with no markings in resistor symbol is 1 WATT the smaller
resistor symbols have a dash in them is .25 watt can you please help out
thanking you
andrew lebon
greetings just want to confirm a few things
1 R 100 is .47 ohms R52 4.7 ohms should be of same value what is correct value
2 how to identify 1 WATT RESISTANCES in vertex schematic i am thinking
longer resistances with no markings in resistor symbol is 1 WATT the smaller
resistor symbols have a dash in them is .25 watt can you please help out
thanking you
andrew lebon
CREST CA 18 or PRO 9001, but CREST use single step class H, VERTEX use two step class H.
Crest Audio
Regards
hi apexaudio
greetings can you please tell transformer secondary voltages for vertex taking
into consideration using 2sc 5200 and 2sa1943 in output my driver pcb has T24 T25 and
T26 T33 with vi limiter resitances R 64 R65 on one pcb and 10 pairs output transistors on
output pcb is it ok many diyers can not afford expensive output transistor as in vertex but they are available easily
1 how many watts should i get
2 biasing procedure in AB class
many diyers like vertex its going to be very popular
thanking you
andrew lebon
greetings can you please tell transformer secondary voltages for vertex taking
into consideration using 2sc 5200 and 2sa1943 in output my driver pcb has T24 T25 and
T26 T33 with vi limiter resitances R 64 R65 on one pcb and 10 pairs output transistors on
output pcb is it ok many diyers can not afford expensive output transistor as in vertex but they are available easily
1 how many watts should i get
2 biasing procedure in AB class
many diyers like vertex its going to be very popular
thanking you
andrew lebon
hi apexaudio
greetings i had asked you about wattage of resistors crest 9001
output section is very similiar to vertex can i follow crest wattages most
resistance values are similiar to vertex and wattages are given
1 what advantage to add 3 .68 condensers in parallel can 2,2 uf non polar be
used
thanking you
andrew lebon
greetings i had asked you about wattage of resistors crest 9001
output section is very similiar to vertex can i follow crest wattages most
resistance values are similiar to vertex and wattages are given
1 what advantage to add 3 .68 condensers in parallel can 2,2 uf non polar be
used
thanking you
andrew lebon
Since 5200/1943 are 230V devices, your rail step voltage cannot be more than 55VDC in 3 Step-H i.e. 3 X 55VDC per side.
For trafo secondaries you need 6 X 38vac steps for bipolar supply.
Last edited:
