P peeby Member Joined 2020 2021-08-22 11:00 pm #21 2021-08-22 11:00 pm #21 Here are the waveforms with the PS fets out of circuit. Attachments IMG-1293.jpg 962.6 KB · Views: 85 IMG-1294.jpg 911.2 KB · Views: 88 P peeby Member Joined 2020 2021-08-25 6:53 pm #22 2021-08-25 6:53 pm #22 So when I put the PS fets in, and the output fets are not in circuit the amp is drawing excessive current, and I seem to lose gate drive to the PS fets. P peeby Member Joined 2020 2021-12-14 12:55 am #23 2021-12-14 12:55 am #23 PapaZBill said: With the FETs out of the circuit, capture the waveforms on PINs 4 and 6 of IC16-UC3843 and post screenshots. It's possible C124-2nF is cracked or failing, causing the timing and wave shape to be off. Click to expand... Bill - I am back on this project. What PS fets does this amp require? PapaZBill Member Joined 2013 2021-12-15 4:13 pm #24 2021-12-15 4:13 pm #24 Peeby, The PS Mosfets are IRFB4110 Prev 1 2 First Prev 2 of 2 Go to page Go You must log in or register to reply here. Share: Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link
P peeby Member Joined 2020 2021-08-25 6:53 pm #22 2021-08-25 6:53 pm #22 So when I put the PS fets in, and the output fets are not in circuit the amp is drawing excessive current, and I seem to lose gate drive to the PS fets. P peeby Member Joined 2020 2021-12-14 12:55 am #23 2021-12-14 12:55 am #23 PapaZBill said: With the FETs out of the circuit, capture the waveforms on PINs 4 and 6 of IC16-UC3843 and post screenshots. It's possible C124-2nF is cracked or failing, causing the timing and wave shape to be off. Click to expand... Bill - I am back on this project. What PS fets does this amp require? PapaZBill Member Joined 2013 2021-12-15 4:13 pm #24 2021-12-15 4:13 pm #24 Peeby, The PS Mosfets are IRFB4110 Prev 1 2 First Prev 2 of 2 Go to page Go You must log in or register to reply here. Share: Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link
So when I put the PS fets in, and the output fets are not in circuit the amp is drawing excessive current, and I seem to lose gate drive to the PS fets.
P peeby Member Joined 2020 2021-12-14 12:55 am #23 2021-12-14 12:55 am #23 PapaZBill said: With the FETs out of the circuit, capture the waveforms on PINs 4 and 6 of IC16-UC3843 and post screenshots. It's possible C124-2nF is cracked or failing, causing the timing and wave shape to be off. Click to expand... Bill - I am back on this project. What PS fets does this amp require? PapaZBill Member Joined 2013 2021-12-15 4:13 pm #24 2021-12-15 4:13 pm #24 Peeby, The PS Mosfets are IRFB4110 Prev 1 2 First Prev 2 of 2 Go to page Go You must log in or register to reply here.
PapaZBill said: With the FETs out of the circuit, capture the waveforms on PINs 4 and 6 of IC16-UC3843 and post screenshots. It's possible C124-2nF is cracked or failing, causing the timing and wave shape to be off. Click to expand... Bill - I am back on this project. What PS fets does this amp require?
PapaZBill Member Joined 2013 2021-12-15 4:13 pm #24 2021-12-15 4:13 pm #24 Peeby, The PS Mosfets are IRFB4110
