UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Testing unknown transistors for max frequency response

Silicon · 8th Mar 2018, 2:33 pm

Look up 'Gain Bandwidth Product'.

The gain at higher frequencies depends on the transistor parameters and the circuit design.

If you use Herald1360s circuit you should be able to measure (a) the low frequency gain, (b) the frequency at which it drops to 30% of the low frequency gain, and (c) the frequency at which the gain is 1.

8th Mar 2018, 2:33 pm	#3
Silicon Nonode Join Date: Jun 2007 Location: Coulsdon, London, UK. Posts: 2,169	Re: Testing unknown transistors for max frequency response Look up 'Gain Bandwidth Product'. The gain at higher frequencies depends on the transistor parameters and the circuit design. If you use Herald1360s circuit you should be able to measure (a) the low frequency gain, (b) the frequency at which it drops to 30% of the low frequency gain, and (c) the frequency at which the gain is 1.