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2. Bureau of State Security - Wikipedia

   en.wikipedia.org/wiki/Bureau_of_State_Security

   General van den Bergh resigned as director-general in 1978 in the wake of the Muldergate scandal, and BOSS was renamed the Department of National Security.In the same year, Vorster was replaced as prime minister by defence minister, P. W. Botha, whose government pursued a protracted restructuring of the intelligence services, culminating in the replacement of the department with the National ...

3. Boss Audio - Wikipedia

   en.wikipedia.org/wiki/Boss_Audio

   BOSS Audio Systems is an American manufacturer of audio and video equipment for automotive, power sport and marine applications. The company was founded by Sam Rabbani in 1987. [ 1 ]

4. Audio power amplifier - Wikipedia

   en.wikipedia.org/wiki/Audio_power_amplifier

   Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.

5. Cahora Bassa (HVDC) - Wikipedia

   en.wikipedia.org/wiki/Cahora_Bassa_(HVDC)

   The Cahora-Bassa transmission project was a joint venture of the two electrical utilities, Electricity Supply Commission (ESCOM, as it was known prior to 1987), latterly Eskom, Johannesburg, South Africa and Hidroelectrica de Cahora Bassa (HCB), a firm owned 15% by the government of Portugal and 85% by Mozambique.

6. Boss Corporation - Wikipedia

   en.wikipedia.org/wiki/Boss_Corporation

   The latest op-amp change occurred in 2007, when new DS-1 pedals began shipping with the NJM3404AL op-amp. In 2014, Boss released the Japanese-made "Waza-Craft" line of premium pedals, built with higher-end components featuring reissues of highly sought after vintage Boss effects such as the DM-2W Analog Delay, CE-2W Analog Chorus and DC-2W ...

7. List of African countries by GDP (PPP) - Wikipedia

   en.wikipedia.org/wiki/List_of_African_countries...

   This is a list of the African nations ranked by Gross Domestic Product (GDP) at Purchasing Power Parity (PPP). ... South Africa: 993.745: 15,361.30: 2024

8. Amplifier figures of merit - Wikipedia

   en.wikipedia.org/wiki/Amplifier_figures_of_merit

   Drain efficiency is the ratio of output RF power to input DC power when primary input DC power has been fed to the drain of a field-effect transistor. Based on this definition, the drain efficiency cannot exceed 25% for a class A amplifier that is supplied drain bias current through resistors (because RF signal has its zero level at about 50% ...

9. Power-added efficiency - Wikipedia

   en.wikipedia.org/wiki/Power-added_efficiency

   It differs from most power efficiency descriptions calculated (in percent) as: = / PAE will be very similar to efficiency when the gain of the amplifier is sufficiently high. But if the amplifier gain is relatively low the amount of power that is needed to drive the input of the amplifier should be considered in a metric that measures the ...