Abstract
The main body of a book be to design a transistor TV set video amplification circuit , be a circuit's turn to be composed of three parts mainly: Belt wave filtering , preposition level, export level.
The M-FET circuit the main body of a book is applied develops a TV set look at put in the new circuit of final stage. That newly designed M-FET looks at the characteristic putting in the final stage circuit is to have canceled inductance compensating a component. The experiment bear fruit indicates 6MHz about expansion than the bandwidth gathering an electricity having back-off looking at of inductance to put in the final stage circuit step , owes a circuit, whose curvilinear amplitude-frequency characteristic evenness has bigger improvement at present therefore, the TV set is looked at putting in the final stage circuit being able to cancel inductance compensating a component , is is suitable for integration-rization more.
Television emission pulse because of it, the band having decided video frequency amplifier's needs sufficient width, distortion insufficient width is only capable to do bringing about wave form, the amplifier can not satisfy a request , the method solving has with shooting RC on level simplely together various: Add launch level capacitance; Collection electricity level adds in-line (shunt compensation) of inductance , M-FET enlarges a circuit waiting to can increase bandwidth.
The main body of a book have enlarged a circuit to M-FET having made upright detailed Zhao , have carried out explanation on have problem controlling middle, choice and parametric ascertaining that of component have composed detailed instruction for compensating a component, has made accurate derivation to the formula secretly scheming against.
Keywords: Broadband; Frequency compensation; Video amplification; Enlarges gain; Output extent
