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PS audio offered the PCA II preamplifier. This was discontinued and replaced with the GCP-200 preamplifier. Each had an optional phono stage and external power supply option. For amplifiers, PS audio offered the HCA-2 "digital" amplifier. This was a switching amplifier (many would call this a Class D Amplifier) that provide about 150 watts per ...
Planar Crown is a series of Blind mate electrical RF connectors manufactured by API Weinchel. [1] [2] It is fitted for example to the RF input connector of the Tektronix Real Time Spectrum Analyzer RTSA-5000 series. [3] An adapter is required to connect the more common N-type or 3.5 mm connectors.
By 1977, all of Crown's tape recorder products had been phased out. [2] In 1979, Crown introduced the PSA-2 & SA-2 power amplifiers with analog computer control of transistor performance to maximize output characteristics. [2] The FM-1 stereo radio tuner was praised at the Consumer Electronics Show. [2] In 1981, the FM-2 with digital tuning was ...
FAKRA connector is a modified SMB connector with a keyed and colour coded plastic housing and latch, used in the automotive industry [5] SMC connector; SSMA connector is a 50 Ohm nominal impedance RF connector which utilizes a 10–36 threaded coupling and is essentially a scaled down version of the SMA. They are characterized by compactness ...
The decibel unloaded reference voltage, 0 dBu, is the AC voltage required to produce 1 mW of power across a 600 Ω impedance (approximately 0.7746 V RMS). [2] This awkward unit is a holdover from the early telephone standards, which used 600 Ω sources and loads, and measured dissipated power in decibel-milliwatts ( dBm ).
The corresponding International standards are published by the International Electrotechnical Commission: IEC 60339-1 [1] and IEC 60339-2. [2] These standards are more complete as they include many additional sizes that are missing in the EIA standards.
It is very common in blogs and websites to incorrectly name a specific connector only by the name of the manufacturer. To minimize confusion, it is best to describe a connector using: the manufacturer's name, exact connector series, and optionally the pitch, such as "JST-XH" or "JST-XH-2.50mm" or "2.50mm JST XH-series" or other variations.
The 2.5 mm or sub-miniature sizes were similarly popularized on small portable electronics. They often appeared next to a 3.5 mm microphone jack for a remote control on-off switch on early portable tape recorders; the microphone provided with such machines had the on-off switch and used a two-pronged connector with both the 3.5 and 2.5 mm plugs.