Related Manuals for Augustica Frigate
Summary of Contents for Augustica Frigate
- Page 1 Frigate ® Headphone Amplifier With Two 6922 & Two 6H30Pi Tubes Augustica ® T e c h n o l o g i e s w w w . a u g u s t i c a . c o m...
- Page 2 Safe assembly and operation of this kit is the users responsibility. The kit and this user manual are provided 'as is'. Augustica Technologies Inc. accepts no responsibility for any damage, injury or death as a result of assembling this kit or using the information herein.
- Page 3 ® The circuit of the headphone amplifier Frigate is shown in Figure 1 (Frigate's schematic also appears on the website www.Augustica.com) uses the readily available Electro ® Harmonix 6922 and 6H30Pi double triodes to provide amplification. For the purposes of this discussion, we will be considering left channel of the amplifier.
- Page 4 6922 and 6H30Pi ® tubes in the left and right channels. In other words, each channel of the amplifier Frigate has its own filament power supply. The transformer windings that supply voltage to the filaments of the left channel are connected to the terminal block K3.
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Page 5: Power Supply Pcb
For the purposes of this description we will be dealing with the stage of the power supply ® that supplies filament voltage to the tubes of the left channel of the amplifier Frigate The stage of the power supply that supplies filament voltage to the tubes of the right channel is identical to the one that supplies filament voltage to the tubes in the left channel and its description therefore will be omitted. - Page 6 (PCB). One PCB ® houses the power supply and the other houses the amplifier. Start assembly of Frigate with assembly of the power supply PCB. Start the assembly of the power supply PCB with assembly of the high B-plus DC voltage bus of the power supply and first attach the MOSFET transistor IC1 to its heatsink.
- Page 7 ® Augustica T e c h n o l o g i e s Connect a transformer or variac to the terminal block K3 and slowly bring AC voltage to 12 Volt AC. Measure the DC voltage produced by the rectifying bridge D8-D11. If you applied 12 Volt AC to the rectifying bridge, you should obtain about 17 Volts DC after rectification.
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Page 8: Amplifier Pcb
Frigate . Start with the tube sockets, followed by the resistors, capacitors, and diodes. ® Before testing the headphone amplifier Frigate , visually inspect the amplifier's PCB for breaks in symmetry between the left and right channels. ESTING First, attach only low voltage (filament) power supply’s transformer leads to the terminal... - Page 9 If you would like to see some new audio PCB or kit or recommend a change to an existing product, drop us a line by e-mail on the website www.Augustica.com (begin the subject line with “Frigate” or the SPAM filters are sure to eat your message). Page 9 of 9...
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