Objective:In this trainer video IF signals (38.9MHZ) and sound signals (33.4MHZ) obtained from the tuner are given at the input of this section using IC3068. A separate detector has been used in this IC for obtaining the inter carrier sound IF signals.
Dimension: 27cms x 17cms x 10cms.Weight: 500gms
Objectives:This trainer is based on 1190 IC and has got
Multistage IF amplifierFM DetectorDC Volume controlAudio power amplifier
The main function of this trainer is to amplify the inter carrier sound IF SIGNALS (5.5MHZ) and to detect these to obtain the sound signals.Dimension: 27cms x 17cms x 10cms.Weight: 500gms
Objective:
This trainer consists of sync separator, line frequency oscillator phase comparator with synchronizing arrangements and amplifier for amplifying sweep signals produced by the oscillator. You will connect the video signals input, fly-back pulse input from the horizontal output stage and EHT generator training board. You will observe that the horizontal drive (15,625) obtained from this section is given to the EHT voltage Generator board. The synchronizing signals is removed from composite video signal and you will connect them to vertical sweep oscillator board.
Objectives :
This board is the mother board of the T.V. receiver. You will connect the following training boards to this board,
From vision IF (keying pulse, video signal)From Horizontal subsystem (video signal, Flyback pulse, Horizontal drive)From vertical oscillator (+ 20V, blanking out)110V power supply from TV power supply boardVideo signal, various grid voltages etc. (To picture tube section)Dimension: 27cms x 17cms x 10cms.Weight: 500gms
This trainer performs two main functions.a) Firstly - it produces oscillations at the vertical sweep rate (50Hz). The phase and frequency of these oscillations is controlled by the vertical sync signals obtained from the sync separator.b) Secondly-it amplifies these oscillations and provides sufficient current of saw tooth waveform to the vertical deflection coil. Flyback pulses are also obtained from this section for suppressing the vertical retrace lines on the picture tube
You will connect the vertical & horizontal deflection coil to the neck of the picture positions by changing it. You will connect the valve base to the respective point of P.T.EHT (16KV) cable is also connected to the final anode of picture tube, The above three points are taken from the TV horizontal output and EHT generator board. Loud speaker is provided which is to be connected from TV sound IF section training board Tuner is also provided on the cabinet.
Objectives:AII TV training boards from U1-U5 can be energized by this TV power supply it will have following voltages.
110V output horizontal output stage and EHT generator training board21 V TV sound subsystem training board12V TV vision IF subsystem training board and tuner20V vertical sweep generator board. It is a single PCB with complete power supply circuit printed on the top of the panelInput Supply: 230 VAC/50Hz mains operated.Dimension: 27cms x 17cms x 10cms.Weight: 500gms
