K kurrodu New Member Oct 19, 2009 #1 In the circuit below the triac BT 136 switches only upto 60Watts. I would like to use a higher wattage bulb (100 Watts). Could you please suggest another triac. https://www.electronicsforu.com/EFYLinux/circuit/June2008/CI-05_June08.pdf Last edited: Oct 19, 2009
In the circuit below the triac BT 136 switches only upto 60Watts. I would like to use a higher wattage bulb (100 Watts). Could you please suggest another triac. https://www.electronicsforu.com/EFYLinux/circuit/June2008/CI-05_June08.pdf
K kurrodu New Member Oct 19, 2009 #3 Please check now, the link has been revised. Last edited: Oct 19, 2009
gaspode42 Member Oct 19, 2009 #4 I may be incorrect but according to the data-sheet the BT136 will handle up to 4A, so a 100W bulb should work as is I think.
I may be incorrect but according to the data-sheet the BT136 will handle up to 4A, so a 100W bulb should work as is I think.
K kurrodu New Member Oct 19, 2009 #5 I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 136 replacing BT 139 in the circuit ? Last edited: Oct 19, 2009
I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 136 replacing BT 139 in the circuit ?
ericgibbs Well-Known Member Most Helpful Member Oct 19, 2009 #6 kurrodu said: I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 139 replacing BT 169 in the circuit ? Click to expand... hi, The BT169 triac is only rated at 0.5Arms, whereas the BT139 is 4Arms.
kurrodu said: I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 139 replacing BT 169 in the circuit ? Click to expand... hi, The BT169 triac is only rated at 0.5Arms, whereas the BT139 is 4Arms.
M mdorian Member Oct 19, 2009 #8 Yes , you can , change R10 and R9 to 1..2 Kohm , at least 1W because BT139 need four times gate trigger current than BT136.
Yes , you can , change R10 and R9 to 1..2 Kohm , at least 1W because BT139 need four times gate trigger current than BT136.
ericgibbs Well-Known Member Most Helpful Member Oct 19, 2009 #9 kurrodu said: Sorry Ericgibbs, I meant replacing Bt 136 with Bt 139 Click to expand... The BT139 is a 16Arms triac. What are you planning to control.? The latching and holding currents for the BT139 are approx double that of the BT136. EDIT: If you use the BT139, you may have to reduce the 5.6K on the MOC3021 to approx 3.9K. The MOC and BC547 will be OK. Last edited: Oct 19, 2009
kurrodu said: Sorry Ericgibbs, I meant replacing Bt 136 with Bt 139 Click to expand... The BT139 is a 16Arms triac. What are you planning to control.? The latching and holding currents for the BT139 are approx double that of the BT136. EDIT: If you use the BT139, you may have to reduce the 5.6K on the MOC3021 to approx 3.9K. The MOC and BC547 will be OK.
J Jirka46 New Member Oct 19, 2009 #10 kurrodu said: I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 136 replacing BT 139 in the circuit ? Click to expand... Of course they are dim. If you want full power you have to connect them in parallel. Jirka
kurrodu said: I connected one 60 watt bulb and one 40 watt in series which are dim when lit. Do you think I can use BT 136 replacing BT 139 in the circuit ? Click to expand... Of course they are dim. If you want full power you have to connect them in parallel. Jirka
K kurrodu New Member Oct 19, 2009 #11 Jirka46 said: Of course they are dim. If you want full power you have to connect them in parallel. Jirka Click to expand... You rock!!!. I realized that after a made a post here. THANK YOU ALL FOR THE SUPPORT
Jirka46 said: Of course they are dim. If you want full power you have to connect them in parallel. Jirka Click to expand... You rock!!!. I realized that after a made a post here. THANK YOU ALL FOR THE SUPPORT