摘要:
A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.
摘要:
A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.
摘要:
A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.
摘要:
An electronic component mounted structure has: a circuit board; two semiconductor elements that are mounted on the circuit board; and an AC coupling capacitor that is operable to cut off signals with a predetermined frequency or less and is provided between the two semiconductor elements. The AC coupling capacitor is mounted on the circuit board such that a part or a whole of the AC coupling capacitor is away from the surface of the circuit board.
摘要:
A transmission/reception optical module has an optical transmission subassembly 182, an optical reception subassembly 183, and a circuit board 1 wherein the circuit board 1 is formed into one member by a rigid/flexible substrate. Circuit board main bodies 2a, 2b, and an optical reception subassembly fixation region 4 are formed by rigid regions 5A, 5b, and 5P. An area provided between the circuit board main body 2a and the optical reception subassembly 4 is composed of a flexible region 6P. A part of the circuit board main body 2 is composed of a flexible region 6.
摘要:
An electronic component mounted structure has: a circuit board; two semiconductor elements that are mounted on the circuit board; and an AC coupling capacitor that is operable to cut off signals with a predetermined frequency or less and is provided between the two semiconductor elements. The AC coupling capacitor is mounted on the circuit board such that a part or a whole of the AC coupling capacitor is away from the surface of the circuit board.
摘要:
A mounting structure for electronic components is provided with a circuit board that has a step portion formed at one end portion thereof. The step portion is sandwiched by a lead of the electronic component so as to secure the lead to the step portion. The step portion is formed by perforating a region on one surface of the circuit board, and then peeling a part of the circuit board corresponding to the perforated region so as to reduce the thickness of the circuit board at the region.
摘要:
A mounting structure for electronic components is provided with a circuit board that has a step portion formed at one end portion thereof. The step portion is sandwiched by a lead of the electronic component so as to secure the lead to the step portion. The step portion is formed by perforating a region on one surface of the circuit board, and then peeling a part of the circuit board corresponding to the perforated region so as to reduce the thickness of the circuit board at the region.
摘要:
There is provided a filter assembly for combining a wavelength multiplexed optical signal by multiplexing optical signals of different wavelength emitted from respective optical devices, and/or for dividing a wavelength multiplexed optical signal into optical signals of different wavelength and causing the optical signals of different wavelength to enter respective optical devices. This filter assembly comprises: a light transmitting member within which each optical signal propagates; plural optical filters disposed on an upper face of the light transmitting member at a predetermined spacing wherein each optical signal passes through the optical filters; upper reflective layers respectively provided between adjacent ones of the optical filters; and a lower reflective layer provided on a lower face of the light transmitting member, and wherein the wavelength multiplexed optical signal propagates along the same optical path within the light transmitting member.
摘要:
A stator of a vehicular alternating current generator comprising: a stator core having slots; and a stator coil wound in the slots of the stator core; wherein a resin having a peak or peaks of a loss tangent which is a value of a loss elastic modulus divided by a storage elastic modulus in a temperature range of from 100.degree. C. to 250.degree. C. is provided among coil strands of the stator coil and/or between the stator core and the stator coil.