(Another) pre-charge circuit?
- Thread starter jkrienert
- Start date
(EDIT: apparently while i was away from the computer in the middle of typing this up when jellybeantheperfectlynormalschmoo needed meds, breakfast, and playtime, then i needed breakfast, bananu7 found the link, but i'll still post the analysis of the spec sheet i'd started typing up)
A quick google for "BGR30TQS KOA Resistor" finds this spec sheet as the second hit
www.koaglobal.com
(attached in case of link rot)
copied from the pdf (sorry formatting didn't work)
Type PowerRatingResistance Range（Ω）E24 Style & Weight（g/1pcs）F：±1% G：±2% J：±5% K：±10% S N E P X Y YS Z H Q HA HB QA QB
BGR30 30W ̶ ̶ 10～390 2.2～9.1 ̶ ̶ ̶ ̶ ̶ ̶ ̶ ̶ 59.3 59.6 73.9 73.5 74.2 73.8
Type Dimensions（mm）L L1 L2 W W1 H H1±1.0 H2 （H3） （P） t （φf）
BGR30TQ 75±2.5 40±1.2 10.0 19.0±1.5 6.3 19.0±1.5 8.0 4.1 56 0.8 1.7
■Type DesignationExample ※1 Lead-Free plated terminal symbols. C（SnCu）：N, E, S and P styles T（Sn）：X, Y, YS, Z, H and Q styles※2 No indication on style means S style. BWR 3 C N 100 JProductCode BGR：Wirewound （Glass core） BWR：Wirewound （Ceramic core） BSR：Metal oxide filmPowerRatingSee tableaboveTerminal※1Surface MaterialC：SnCuT：SnResistanceToleranceF：±1%G：±2%J：±5%K：±10%NominalResistanceF：4 digitsG,J,K：3 digitsStyle※2Nil：S style N：N style E：E style P：P styleX：X style Y：Y style YS：YS style Z：Z style H：H style Q：Q style HA：HA style HB：HB style QA：QA style QB：QB style
So it's a 30W glasscore wirewound resistor, and they are made in the range of 10 to 390 ohms wiht 5% tolerance. The sheet doesn't say how to decode the actual resistance from teh given numbers, so to verify that you can simply measure across it to find out what it is, if it is not parallel with any other components. If it is, you'll have to disconnect one end to measure.
A quick google for "BGR30TQS KOA Resistor" finds this spec sheet as the second hit
ＫＯＡ株式会社
copied from the pdf (sorry formatting didn't work)
Type PowerRatingResistance Range（Ω）E24 Style & Weight（g/1pcs）F：±1% G：±2% J：±5% K：±10% S N E P X Y YS Z H Q HA HB QA QB
BGR30 30W ̶ ̶ 10～390 2.2～9.1 ̶ ̶ ̶ ̶ ̶ ̶ ̶ ̶ 59.3 59.6 73.9 73.5 74.2 73.8
Type Dimensions（mm）L L1 L2 W W1 H H1±1.0 H2 （H3） （P） t （φf）
BGR30TQ 75±2.5 40±1.2 10.0 19.0±1.5 6.3 19.0±1.5 8.0 4.1 56 0.8 1.7
■Type DesignationExample ※1 Lead-Free plated terminal symbols. C（SnCu）：N, E, S and P styles T（Sn）：X, Y, YS, Z, H and Q styles※2 No indication on style means S style. BWR 3 C N 100 JProductCode BGR：Wirewound （Glass core） BWR：Wirewound （Ceramic core） BSR：Metal oxide filmPowerRatingSee tableaboveTerminal※1Surface MaterialC：SnCuT：SnResistanceToleranceF：±1%G：±2%J：±5%K：±10%NominalResistanceF：4 digitsG,J,K：3 digitsStyle※2Nil：S style N：N style E：E style P：P styleX：X style Y：Y style YS：YS style Z：Z style H：H style Q：Q style HA：HA style HB：HB style QA：QA style QB：QB style
So it's a 30W glasscore wirewound resistor, and they are made in the range of 10 to 390 ohms wiht 5% tolerance. The sheet doesn't say how to decode the actual resistance from teh given numbers, so to verify that you can simply measure across it to find out what it is, if it is not parallel with any other components. If it is, you'll have to disconnect one end to measure.
I didn't find that link yet, so thanks for the both y'all sharing!Easy enough to find
ＫＯＡ株式会社
Can confirm that the resistor Measures around 30 Ohm.
Last edited:
