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1. 发明专利

BG63181B1 POWER AMPLIFIER 未知
公开(公告)号：BG63181B1
公开(公告)日：2001-05-31
申请号：BG10321599
申请日：1999-02-26
申请人： DESPOTOV ANGEL P
发明人： DESPOTOV ANGEL P
IPC分类号： H03F1/30 , H03F3/00 , H03F3/26
摘要： The amplifier can be used in radio engineering. It has improved stability, unified tuning of the products and independence of its parameters from the load parameters. The power amplifier consists of an input differential amplifier (1) connected across a voltage amplifier (2) to the first supply pole, to a push-pull current amplifier (3) to the output of which load (4) is coupled. The DC negative feedback (5) is connected to the output of amplifier (3). A divider of two resistors (6 & 7) is coupled between the input of amplifier (2) and the second pole of the supply. The first resistor (6) is connected between the bases of the transistors at the end current amplifier (3). In addition there is also a signal feedback (8) from the output of amplifier (2) which, across a circuit for uniting the feedbacks (9) together with feedback (5), is coupled to the inverting input of amplifier (1). The first resistor (6) has permanent value, and the second resistor (7) is a controllable dynamic thermostabilized load. One of the outputs for supplying the amplifier (3) is connected to its respective second pole (10) of the supply source across a thermostabilized unit for following the initial current (11) the output of which is connected to the input of the controllable dynamic load (7). 2 claims, 2 figures

2. 发明专利

BG105670A POWERE AMPLIFIER 未知
公开(公告)号：BG105670A
公开(公告)日：2002-01-31
申请号：BG10567001
申请日：2001-07-04
申请人： DESPOTOV ANGEL P
发明人： DESPOTOV ANGEL P
IPC分类号： H03F1/30 , H03F3/26
摘要： The amplifier can be used in radio engineering, in particular in the sound reproducing engineering. It has reduced power consumption and has simplified, economical utilization. It consists of an input differential amplifier (1) connected, across a first pole to a voltage amplifier (2) to the first pole of the supply, to a push-pull end current amplifier (3), to the output of which a load (4) is connected. The negative feedback of the DC voltage (5) is coupled to the output of the end current amplifier (3). Between the output of the voltage amplifier (2) and the second pole of the supply, a divider of two resistors (6 and 7) is connected. The first resistor (6) is coupled between the bases of the transistors in the end current amplifier (3). A feedback along signal (8) from the output of the voltage amplifier (2), across a chain for uniting the feedback connections (9) together with the feedback along the DC voltage (5) is connected to the inverter input of the input differential amplifier (1). The first resistor (6) has a permanent value, and the second resistor (7) has controllable dynamic thermostabilization load. One of the outputs for supplying the end current amplifier (3) is connected to its respective second pole (10) of its supply source across a thermostabilized unit for following the initial current (11), the output of which is coupled to the input of the controllable dynamic load (7). Thyristors (12) in the end amplifier (3) are components of the "inverted Darlington" circuit. The second pole of the supply is connected to the second supply input of the input differential amplifier (1) across a controllable current generator (13) the control input of which is coupled to the output of the unit for following the initial current (11). 1 claim, 1 figure

3. 发明专利

BG35628A1 ADSORBEND FOR AROMATIZING SUBSTANCES AND METHOD FOR ITS PREPARING 未知
公开(公告)号：BG35628A1
公开(公告)日：1984-06-15
申请号：BG5798282
申请日：1982-09-16
申请人： GANKOV , ANGELOVA , DIMOV , PISHEV , ARMJANOV , DESPOTOV , DRENKOV , RIBOGIN
发明人： GANKOV , ANGELOVA , DIMOV , PISHEV , ARMJANOV , DESPOTOV , DRENKOV , RIBOGIN
IPC分类号： B01D15/00 , C11D3/37

4. 发明专利

DE2709453A1 Electronic musical instrument tuner - compares instrument frequency with internal standard giving optical indication of beat note using LEDs 未知
公开(公告)号：DE2709453A1
公开(公告)日：1977-09-29
申请号：DE2709453
申请日：1977-03-04
申请人： DESPOTOV ISIDOR
发明人： DESPOTOV ISIDOR
IPC分类号： G10G7/02
摘要： The electronic tuning indicator is for musical instruments and operates over a range of nine octaves. Signals from the instrument are picked up by a microphone (14) and fed to an amplifier (15) and pulse shaper (16) from which they are used as clock signals for the flip-flop (17). In the flip-flop, the instrumental signals are compared with those from a multivibrator (3) followed by a frequency divider (8) with octave selector (9). With zero beat between the signal from the instrument picked up on the microphone and the locally generated reference frequency, one of two light-emitting diodes (18, 19) lights up. With non-equality, the two diodes light alternately at a rate equal to the frequency difference.

5. 发明专利

SU76353A1 Металлическая опалубка для перекрытий 未知
公开(公告)号：SU76353A1
公开(公告)日：1948-11-30
申请号：SU375630
申请日：1948-02-03
申请人： DESPOTOV A A
发明人： DESPOTOV A A
IPC分类号： E04G11/38 , E04G17/18

6. 发明专利

BG103215A POWER AMPLIFIER 未知
公开(公告)号：BG103215A
公开(公告)日：2000-09-29
申请号：BG10321599
申请日：1999-02-26
申请人： DESPOTOV ANGEL P
发明人： DESPOTOV ANGEL P
IPC分类号： H03F1/30 , H03F3/00 , H03F3/26
摘要： The amplifier can be used in radio engineering. It has improved stability, unified tuning of the products and independence of its parameters from the load parameters. The power amplifier consists of an input differential amplifier (1) connected across a voltage amplifier (2) to the first supply pole, to a push-pull current amplifier (3) to the output of which load (4) is coupled. The DC negative feedback (5) is connected to the output of amplifier (3). A divider of two resistors (6 & 7) is coupled between the input of amplifier (2) and the second pole of the supply. The first resistor (6) is connected between the bases of the transistors at the end current amplifier (3). In addition there is also a signal feedback (8) from the output of amplifier (2) which, across a circuit for uniting the feedbacks (9) together with feedback (5), is coupled to the inverting input of amplifier (1). The first resistor (6) has permanent value, and the second resistor (7) is a controllable dynamic thermostabilized load. One of the outputs for supplying the amplifier (3) is connected to its respective second pole (10) of the supply source across a thermostabilized unit for following the initial current (11) the output of which is connected to the input of the controllable dynamic load (7). 2 claims, 2 figures

7. 发明专利

BG39154A1 METHOD FOR MANUFACTURE OF FLAT COPPER AND BRASS ROLLED MATERIAL 未知
公开(公告)号：BG39154A1
公开(公告)日：1986-05-15
申请号：BG6740984
申请日：1984-11-02
申请人： PETROV , ZAJJDEL , LAZAROV , MINKOV , PALAPESHKOV , DIMITROV , BOEV , VOJJNOV , SPASOV , DESPOTOV , GENADIEV , DIMOV , DARAKCHIEV , IVANOV , PRVANOV , GAVRAILOV
发明人： PETROV , ZAJJDEL , LAZAROV , MINKOV , PALAPESHKOV , DIMITROV , BOEV , VOJJNOV , SPASOV , DESPOTOV , GENADIEV , DIMOV , DARAKCHIEV , IVANOV , PRVANOV , GAVRAILOV
IPC分类号： B21B1/02

8. 发明专利

BG36749A1 ELECTROMECHANICAL PLATFORM DEVICE FOR MASS WEIGHING 未知
公开(公告)号：BG36749A1
公开(公告)日：1985-01-15
申请号：BG5803482
申请日：1982-09-22
申请人： IVANOV , DESPOTOV , KALEV , PESHEV
发明人： IVANOV , DESPOTOV , KALEV , PESHEV
IPC分类号： G01G7/00

9. 发明专利

BG36522A1 AUTOMATIC LINE FOR COMPLETE MECHANICAL PROCESSING OF SLEEVES 未知
公开(公告)号：BG36522A1
公开(公告)日：1984-12-16
申请号：BG6235183
申请日：1983-09-14
申请人： SAVOV , BOEV , TASLAKOV , STAEVSKI , LOZANOV , RALCHEV , FRENGOV , DESPOTOV , KARAGOZOV , DIMITROV
发明人： SAVOV , BOEV , TASLAKOV , STAEVSKI , LOZANOV , RALCHEV , FRENGOV , DESPOTOV , KARAGOZOV , DIMITROV
IPC分类号： B23Q37/00 , B23Q39/00

10. 发明专利

BG30854A1 METHOD FOR BREAKING DOWN OF RESISTANT WATER- TAR EMULSIONS AND SUSPENSIONS 未知
公开(公告)号：BG30854A1
公开(公告)日：1981-09-15
申请号：BG4844780
申请日：1980-07-10
申请人： IVANOV , DESPOTOV , KOZAREVA
发明人： IVANOV , DESPOTOV , KOZAREVA
IPC分类号： B01D17/04 , B01D17/06 , C10C1/00

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